diff --git a/app/scripts/account-import-strategies/account-import-strategies.test.js b/app/scripts/account-import-strategies/account-import-strategies.test.js
deleted file mode 100644
index 0c2c6fc3a..000000000
--- a/app/scripts/account-import-strategies/account-import-strategies.test.js
+++ /dev/null
@@ -1,72 +0,0 @@
-import { strict as assert } from 'assert';
-import { stripHexPrefix } from '../../../shared/modules/hexstring-utils';
-import accountImporter from '.';
-
-describe('Account Import Strategies', function () {
-  const privkey =
-    '0x4cfd3e90fc78b0f86bf7524722150bb8da9c60cd532564d7ff43f5716514f553';
-  const json =
-    '{"version":3,"id":"dbb54385-0a99-437f-83c0-647de9f244c3","address":"a7f92ce3fba24196cf6f4bd2e1eb3db282ba998c","Crypto":{"ciphertext":"bde13d9ade5c82df80281ca363320ce254a8a3a06535bbf6ffdeaf0726b1312c","cipherparams":{"iv":"fbf93718a57f26051b292f072f2e5b41"},"cipher":"aes-128-ctr","kdf":"scrypt","kdfparams":{"dklen":32,"salt":"7ffe00488319dec48e4c49a120ca49c6afbde9272854c64d9541c83fc6acdffe","n":8192,"r":8,"p":1},"mac":"2adfd9c4bc1cdac4c85bddfb31d9e21a684e0e050247a70c5698facf6b7d4681"}}';
-
-  describe('private key import', function () {
-    it('imports a private key and strips 0x prefix', async function () {
-      const importPrivKey = await accountImporter.importAccount('Private Key', [
-        privkey,
-      ]);
-      assert.equal(importPrivKey, stripHexPrefix(privkey));
-    });
-
-    it('throws an error for empty string private key', async function () {
-      await assert.rejects(
-        async () => {
-          await accountImporter.importAccount('Private Key', ['']);
-        },
-        Error,
-        'no empty strings',
-      );
-    });
-
-    it('throws an error for undefined string private key', async function () {
-      await assert.rejects(async () => {
-        await accountImporter.importAccount('Private Key', [undefined]);
-      });
-
-      await assert.rejects(async () => {
-        await accountImporter.importAccount('Private Key', []);
-      });
-    });
-
-    it('throws an error for invalid private key', async function () {
-      await assert.rejects(async () => {
-        await accountImporter.importAccount('Private Key', ['popcorn']);
-      });
-    });
-  });
-
-  describe('JSON keystore import', function () {
-    it('fails when password is incorrect for keystore', async function () {
-      const wrongPassword = 'password2';
-
-      try {
-        await accountImporter.importAccount('JSON File', [json, wrongPassword]);
-      } catch (error) {
-        assert.equal(
-          error.message,
-          'Key derivation failed - possibly wrong passphrase',
-        );
-      }
-    });
-
-    it('imports json string and password to return a private key', async function () {
-      const fileContentsPassword = 'password1';
-      const importJson = await accountImporter.importAccount('JSON File', [
-        json,
-        fileContentsPassword,
-      ]);
-      assert.equal(
-        importJson,
-        '0x5733876abe94146069ce8bcbabbde2677f2e35fa33e875e92041ed2ac87e5bc7',
-      );
-    });
-  });
-});
diff --git a/app/scripts/account-import-strategies/index.js b/app/scripts/account-import-strategies/index.js
deleted file mode 100644
index 286452c5a..000000000
--- a/app/scripts/account-import-strategies/index.js
+++ /dev/null
@@ -1,75 +0,0 @@
-import { isValidMnemonic } from '@ethersproject/hdnode';
-import {
-  bufferToHex,
-  getBinarySize,
-  isValidPrivate,
-  toBuffer,
-} from 'ethereumjs-util';
-import Wallet from 'ethereumjs-wallet';
-import importers from 'ethereumjs-wallet/thirdparty';
-import log from 'loglevel';
-import { stripHexPrefix } from '../../../shared/modules/hexstring-utils';
-import { addHexPrefix } from '../lib/util';
-
-const accountImporter = {
-  async importAccount(strategy, args) {
-    const importer = this.strategies[strategy];
-    const privateKeyHex = importer(...args);
-    return privateKeyHex;
-  },
-
-  strategies: {
-    'Private Key': (privateKey) => {
-      if (!privateKey) {
-        throw new Error('Cannot import an empty key.'); // It should never get here, because this should be stopped in the UI
-      }
-
-      // Check if the user has entered an SRP by mistake instead of a private key
-      if (isValidMnemonic(privateKey.trim())) {
-        throw new Error(`t('importAccountErrorIsSRP')`);
-      }
-
-      const trimmedPrivateKey = privateKey.replace(/\s+/gu, ''); // Remove all whitespace
-
-      const prefixedPrivateKey = addHexPrefix(trimmedPrivateKey);
-      let buffer;
-      try {
-        buffer = toBuffer(prefixedPrivateKey);
-      } catch (e) {
-        throw new Error(`t('importAccountErrorNotHexadecimal')`);
-      }
-
-      try {
-        if (
-          !isValidPrivate(buffer) ||
-          getBinarySize(prefixedPrivateKey) !== 64 + '0x'.length // Fixes issue #17719 -- isValidPrivate() will let a key of 63 hex digits through without complaining, this line ensures 64 hex digits + '0x' = 66 digits
-        ) {
-          throw new Error(`t('importAccountErrorNotAValidPrivateKey')`);
-        }
-      } catch (e) {
-        throw new Error(`t('importAccountErrorNotAValidPrivateKey')`);
-      }
-
-      const strippedPrivateKey = stripHexPrefix(prefixedPrivateKey);
-      return strippedPrivateKey;
-    },
-    'JSON File': (input, password) => {
-      let wallet;
-      try {
-        wallet = importers.fromEtherWallet(input, password);
-      } catch (e) {
-        log.debug('Attempt to import as EtherWallet format failed, trying V3');
-        wallet = Wallet.fromV3(input, password, true);
-      }
-
-      return walletToPrivateKey(wallet);
-    },
-  },
-};
-
-function walletToPrivateKey(wallet) {
-  const privateKeyBuffer = wallet.getPrivateKey();
-  return bufferToHex(privateKeyBuffer);
-}
-
-export default accountImporter;
diff --git a/app/scripts/metamask-controller.actions.test.js b/app/scripts/metamask-controller.actions.test.js
index 397648c37..8c015c9c5 100644
--- a/app/scripts/metamask-controller.actions.test.js
+++ b/app/scripts/metamask-controller.actions.test.js
@@ -172,14 +172,14 @@ describe('MetaMaskController', function () {
 
       await metamaskController.createNewVaultAndKeychain('test@123');
       await Promise.all([
-        metamaskController.importAccountWithStrategy('Private Key', [
+        metamaskController.importAccountWithStrategy('privateKey', [
           importPrivkey,
         ]),
         Promise.resolve(1).then(() => {
           keyringControllerState1 = JSON.stringify(
             metamaskController.keyringController.memStore.getState(),
           );
-          metamaskController.importAccountWithStrategy('Private Key', [
+          metamaskController.importAccountWithStrategy('privateKey', [
             importPrivkey,
           ]);
         }),
diff --git a/app/scripts/metamask-controller.js b/app/scripts/metamask-controller.js
index 6658d7ad7..58a81e47f 100644
--- a/app/scripts/metamask-controller.js
+++ b/app/scripts/metamask-controller.js
@@ -190,7 +190,6 @@ import DecryptMessageController from './controllers/decrypt-message';
 import TransactionController from './controllers/transactions';
 import DetectTokensController from './controllers/detect-tokens';
 import SwapsController from './controllers/swaps';
-import accountImporter from './account-import-strategies';
 import seedPhraseVerifier from './lib/seed-phrase-verifier';
 import MetaMetricsController from './controllers/metametrics';
 import { segment } from './lib/segment';
@@ -3560,21 +3559,17 @@ export default class MetamaskController extends EventEmitter {
    * These are defined in app/scripts/account-import-strategies
    * Each strategy represents a different way of serializing an Ethereum key pair.
    *
-   * @param {string} strategy - A unique identifier for an account import strategy.
+   * @param {'privateKey' | 'json'} strategy - A unique identifier for an account import strategy.
    * @param {any} args - The data required by that strategy to import an account.
    */
   async importAccountWithStrategy(strategy, args) {
-    const privateKey = await accountImporter.importAccount(strategy, args);
-    const keyring = await this.keyringController.addNewKeyring(
-      KeyringType.imported,
-      [privateKey],
-    );
-    const [firstAccount] = await keyring.getAccounts();
-    // update accounts in preferences controller
-    const allAccounts = await this.keyringController.getAccounts();
-    this.preferencesController.setAddresses(allAccounts);
+    const { importedAccountAddress } =
+      await this.coreKeyringController.importAccountWithStrategy(
+        strategy,
+        args,
+      );
     // set new account as selected
-    this.preferencesController.setSelectedAddress(firstAccount);
+    this.preferencesController.setSelectedAddress(importedAccountAddress);
   }
 
   // ---------------------------------------------------------------------------
diff --git a/app/scripts/metamask-controller.test.js b/app/scripts/metamask-controller.test.js
index f2c3fa6ad..20f496aba 100644
--- a/app/scripts/metamask-controller.test.js
+++ b/app/scripts/metamask-controller.test.js
@@ -326,7 +326,7 @@ describe('MetaMaskController', function () {
       beforeEach(async function () {
         const password = 'a-fake-password';
         await metamaskController.createNewVaultAndRestore(password, TEST_SEED);
-        await metamaskController.importAccountWithStrategy('Private Key', [
+        await metamaskController.importAccountWithStrategy('privateKey', [
           importPrivkey,
         ]);
       });
diff --git a/lavamoat/browserify/beta/policy.json b/lavamoat/browserify/beta/policy.json
index 3207a448f..12cd90e66 100644
--- a/lavamoat/browserify/beta/policy.json
+++ b/lavamoat/browserify/beta/policy.json
@@ -107,9 +107,14 @@
     },
     "@ensdomains/content-hash>multihashes>multibase": {
       "packages": {
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
         "@ensdomains/content-hash>multihashes>web-encoding": true,
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "browserify>buffer": true
+      }
+    },
+    "@ensdomains/content-hash>multihashes>multibase>base-x": {
+      "packages": {
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@ensdomains/content-hash>multihashes>web-encoding": {
@@ -492,7 +497,7 @@
       "packages": {
         "@ngraveio/bc-ur": true,
         "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "mockttp>graphql-tag>tslib": true
       }
     },
@@ -500,9 +505,9 @@
       "packages": {
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>secp256k1": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@keystonehq/metamask-airgapped-keyring": {
@@ -1035,7 +1040,7 @@
         "@metamask/eth-snap-keyring>@metamask/eth-sig-util": true,
         "browserify>buffer": true,
         "browserify>events": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "@metamask/eth-keyring-controller>@metamask/eth-simple-keyring>ethereum-cryptography": {
@@ -1096,7 +1101,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>ethereum-cryptography": true,
         "ethereumjs-util>rlp": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-ledger-bridge-keyring>hdkey": {
@@ -1105,7 +1110,7 @@
         "@metamask/eth-trezor-keyring>hdkey>coinstring": true,
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-ledger-bridge-keyring>hdkey>secp256k1": {
@@ -1115,7 +1120,7 @@
         "bn.js": true,
         "browserify>insert-module-globals>is-buffer": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-snap-keyring>@metamask/eth-sig-util": {
@@ -1409,7 +1414,7 @@
         "@metamask/eth-trezor-keyring>hdkey>secp256k1": true,
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-trezor-keyring>hdkey>coinstring": {
@@ -1426,12 +1431,12 @@
         "bn.js": true,
         "browserify>insert-module-globals>is-buffer": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-trezor-keyring>hdkey>secp256k1>bip66": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/etherscan-link": {
@@ -1583,11 +1588,11 @@
         "@truffle/codec>utf8": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify": true,
+        "eth-lattice-keyring>gridplus-sdk>aes-js": true,
         "ethereumjs-util>ethereum-cryptography": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>scrypt-js": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>randombytes": true,
+        "mocha>serialize-javascript>randombytes": true,
         "uuid": true
       }
     },
@@ -2486,9 +2491,9 @@
         "bn.js": true,
         "browserify>buffer": true,
         "ethereumjs-util": true,
-        "ethereumjs-wallet>randombytes": true,
         "ethjs>ethjs-unit": true,
-        "ethjs>number-to-bn": true
+        "ethjs>number-to-bn": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "@truffle/codec>web3-utils>ethereum-bloom-filters": {
@@ -2547,7 +2552,7 @@
         "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>js-sha3": true,
         "browserify>buffer": true,
         "eth-ens-namehash": true,
-        "ethereumjs-wallet>bs58check>bs58": true
+        "ethereumjs-util>ethereum-cryptography>bs58check>bs58": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>@ensdomains/address-encoder": {
@@ -2580,8 +2585,8 @@
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>cids>multibase": {
       "packages": {
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
+        "browserify>buffer": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>cids>multicodec": {
@@ -2605,8 +2610,8 @@
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>multihashes>multibase": {
       "packages": {
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
+        "browserify>buffer": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>ethers": {
@@ -2770,7 +2775,7 @@
     },
     "addons-linter>sha.js": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -2860,7 +2865,7 @@
         "browserify>crypto-browserify>public-encrypt": true,
         "browserify>crypto-browserify>randomfill": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>browserify-cipher": {
@@ -2887,7 +2892,7 @@
     "browserify>crypto-browserify>browserify-cipher>evp_bytestokey": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>crypto-browserify>browserify-sign": {
@@ -2916,7 +2921,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>create-hash>cipher-base": true,
         "ethereumjs-util>create-hash>ripemd160": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -2925,7 +2930,7 @@
         "bn.js": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify>diffie-hellman>miller-rabin": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>diffie-hellman>miller-rabin": {
@@ -2947,7 +2952,7 @@
         "browserify>process": true,
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>create-hash>ripemd160": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>crypto-browserify>public-encrypt": {
@@ -2957,14 +2962,14 @@
         "browserify>crypto-browserify>public-encrypt>browserify-rsa": true,
         "browserify>crypto-browserify>public-encrypt>parse-asn1": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>public-encrypt>browserify-rsa": {
       "packages": {
         "bn.js": true,
         "browserify>buffer": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>public-encrypt>parse-asn1": {
@@ -2992,8 +2997,8 @@
       },
       "packages": {
         "browserify>process": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>events": {
@@ -3078,7 +3083,7 @@
     },
     "browserify>string_decoder": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>timers-browserify": {
@@ -3347,6 +3352,7 @@
         "browserify>buffer": true,
         "eth-lattice-keyring>gridplus-sdk>@ethereumjs/common": true,
         "eth-lattice-keyring>gridplus-sdk>@ethereumjs/tx": true,
+        "eth-lattice-keyring>gridplus-sdk>aes-js": true,
         "eth-lattice-keyring>gridplus-sdk>bech32": true,
         "eth-lattice-keyring>gridplus-sdk>bignumber.js": true,
         "eth-lattice-keyring>gridplus-sdk>bitwise": true,
@@ -3356,9 +3362,8 @@
         "eth-lattice-keyring>gridplus-sdk>rlp": true,
         "eth-lattice-keyring>gridplus-sdk>secp256k1": true,
         "eth-lattice-keyring>gridplus-sdk>uuid": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>hash.js": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
         "lodash": true
       }
     },
@@ -3405,6 +3410,11 @@
         "crypto": true
       }
     },
+    "eth-lattice-keyring>gridplus-sdk>aes-js": {
+      "globals": {
+        "define": true
+      }
+    },
     "eth-lattice-keyring>gridplus-sdk>bignumber.js": {
       "globals": {
         "crypto": true,
@@ -3531,7 +3541,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>ethereum-cryptography": true,
         "ethereumjs-util>rlp": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "eth-sig-util>ethereumjs-util>ethjs-util": {
@@ -3603,21 +3613,21 @@
       "packages": {
         "browserify>stream-browserify": true,
         "browserify>string_decoder": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
     "ethereumjs-util>create-hash>md5.js": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js>hash-base": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
     "ethereumjs-util>create-hash>md5.js>hash-base": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js>hash-base>readable-stream": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3644,12 +3654,12 @@
         "browserify>assert": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify>create-hmac": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>hash.js": true,
         "ethereumjs-util>ethereum-cryptography>keccak": true,
         "ethereumjs-util>ethereum-cryptography>secp256k1": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "ethereumjs-util>ethereum-cryptography>browserify-aes": {
@@ -3658,7 +3668,7 @@
         "browserify>crypto-browserify>browserify-cipher>evp_bytestokey": true,
         "ethereumjs-util>create-hash>cipher-base": true,
         "ethereumjs-util>ethereum-cryptography>browserify-aes>buffer-xor": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3667,6 +3677,18 @@
         "browserify>buffer": true
       }
     },
+    "ethereumjs-util>ethereum-cryptography>bs58check": {
+      "packages": {
+        "ethereumjs-util>create-hash": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check>bs58": true,
+        "koa>content-disposition>safe-buffer": true
+      }
+    },
+    "ethereumjs-util>ethereum-cryptography>bs58check>bs58": {
+      "packages": {
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true
+      }
+    },
     "ethereumjs-util>ethereum-cryptography>hash.js": {
       "packages": {
         "@metamask/ppom-validator>elliptic>minimalistic-assert": true,
@@ -3710,78 +3732,9 @@
         "browserify>buffer": true
       }
     },
-    "ethereumjs-wallet": {
-      "packages": {
-        "@truffle/codec>utf8": true,
-        "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>ethereumjs-util": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true,
-        "ethereumjs-wallet>scryptsy": true,
-        "ethereumjs-wallet>uuid": true
-      }
-    },
-    "ethereumjs-wallet>aes-js": {
-      "globals": {
-        "define": true
-      }
-    },
-    "ethereumjs-wallet>bs58check": {
-      "packages": {
-        "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>bs58check>bs58": true,
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>bs58check>bs58": {
-      "packages": {
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
-      }
-    },
-    "ethereumjs-wallet>bs58check>bs58>base-x": {
-      "packages": {
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>ethereumjs-util": {
-      "packages": {
-        "@metamask/ppom-validator>elliptic": true,
-        "bn.js": true,
-        "browserify>assert": true,
-        "browserify>buffer": true,
-        "eth-sig-util>ethereumjs-util>ethjs-util": true,
-        "ethereumjs-util>create-hash": true,
-        "ethereumjs-util>ethereum-cryptography": true,
-        "ethereumjs-util>rlp": true
-      }
-    },
     "ethereumjs-wallet>randombytes": {
       "globals": {
-        "crypto": true,
-        "msCrypto": true
-      },
-      "packages": {
-        "browserify>process": true,
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>safe-buffer": {
-      "packages": {
-        "browserify>buffer": true
-      }
-    },
-    "ethereumjs-wallet>scryptsy": {
-      "packages": {
-        "browserify>buffer": true,
-        "browserify>crypto-browserify>pbkdf2": true
-      }
-    },
-    "ethereumjs-wallet>uuid": {
-      "globals": {
-        "crypto": true,
-        "msCrypto": true
+        "crypto.getRandomValues": true
       }
     },
     "ethers>@ethersproject/random": {
@@ -3980,6 +3933,11 @@
         "readable-stream": true
       }
     },
+    "koa>content-disposition>safe-buffer": {
+      "packages": {
+        "browserify>buffer": true
+      }
+    },
     "koa>is-generator-function>has-tostringtag": {
       "packages": {
         "string.prototype.matchall>has-symbols": true
@@ -4040,6 +3998,16 @@
         "Intl": true
       }
     },
+    "mocha>serialize-javascript>randombytes": {
+      "globals": {
+        "crypto": true,
+        "msCrypto": true
+      },
+      "packages": {
+        "browserify>process": true,
+        "koa>content-disposition>safe-buffer": true
+      }
+    },
     "mockttp>graphql-tag>tslib": {
       "globals": {
         "define": true
diff --git a/lavamoat/browserify/desktop/policy.json b/lavamoat/browserify/desktop/policy.json
index cc3765332..56edb5e32 100644
--- a/lavamoat/browserify/desktop/policy.json
+++ b/lavamoat/browserify/desktop/policy.json
@@ -107,9 +107,14 @@
     },
     "@ensdomains/content-hash>multihashes>multibase": {
       "packages": {
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
         "@ensdomains/content-hash>multihashes>web-encoding": true,
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "browserify>buffer": true
+      }
+    },
+    "@ensdomains/content-hash>multihashes>multibase>base-x": {
+      "packages": {
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@ensdomains/content-hash>multihashes>web-encoding": {
@@ -492,7 +497,7 @@
       "packages": {
         "@ngraveio/bc-ur": true,
         "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "mockttp>graphql-tag>tslib": true
       }
     },
@@ -500,9 +505,9 @@
       "packages": {
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>secp256k1": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@keystonehq/metamask-airgapped-keyring": {
@@ -1106,7 +1111,7 @@
         "@metamask/eth-snap-keyring>@metamask/eth-sig-util": true,
         "browserify>buffer": true,
         "browserify>events": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "@metamask/eth-keyring-controller>@metamask/eth-simple-keyring>ethereum-cryptography": {
@@ -1167,7 +1172,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>ethereum-cryptography": true,
         "ethereumjs-util>rlp": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-ledger-bridge-keyring>hdkey": {
@@ -1176,7 +1181,7 @@
         "@metamask/eth-trezor-keyring>hdkey>coinstring": true,
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-ledger-bridge-keyring>hdkey>secp256k1": {
@@ -1186,7 +1191,7 @@
         "bn.js": true,
         "browserify>insert-module-globals>is-buffer": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-snap-keyring": {
@@ -1537,7 +1542,7 @@
         "@metamask/eth-trezor-keyring>hdkey>secp256k1": true,
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-trezor-keyring>hdkey>coinstring": {
@@ -1554,12 +1559,12 @@
         "bn.js": true,
         "browserify>insert-module-globals>is-buffer": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-trezor-keyring>hdkey>secp256k1>bip66": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/etherscan-link": {
@@ -1734,11 +1739,11 @@
         "@truffle/codec>utf8": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify": true,
+        "eth-lattice-keyring>gridplus-sdk>aes-js": true,
         "ethereumjs-util>ethereum-cryptography": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>scrypt-js": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>randombytes": true,
+        "mocha>serialize-javascript>randombytes": true,
         "uuid": true
       }
     },
@@ -3021,9 +3026,9 @@
         "bn.js": true,
         "browserify>buffer": true,
         "ethereumjs-util": true,
-        "ethereumjs-wallet>randombytes": true,
         "ethjs>ethjs-unit": true,
-        "ethjs>number-to-bn": true
+        "ethjs>number-to-bn": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "@truffle/codec>web3-utils>ethereum-bloom-filters": {
@@ -3082,7 +3087,7 @@
         "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>js-sha3": true,
         "browserify>buffer": true,
         "eth-ens-namehash": true,
-        "ethereumjs-wallet>bs58check>bs58": true
+        "ethereumjs-util>ethereum-cryptography>bs58check>bs58": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>@ensdomains/address-encoder": {
@@ -3115,8 +3120,8 @@
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>cids>multibase": {
       "packages": {
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
+        "browserify>buffer": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>cids>multicodec": {
@@ -3140,8 +3145,8 @@
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>multihashes>multibase": {
       "packages": {
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
+        "browserify>buffer": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>ethers": {
@@ -3305,7 +3310,7 @@
     },
     "addons-linter>sha.js": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3395,7 +3400,7 @@
         "browserify>crypto-browserify>public-encrypt": true,
         "browserify>crypto-browserify>randomfill": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>browserify-cipher": {
@@ -3422,7 +3427,7 @@
     "browserify>crypto-browserify>browserify-cipher>evp_bytestokey": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>crypto-browserify>browserify-sign": {
@@ -3451,7 +3456,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>create-hash>cipher-base": true,
         "ethereumjs-util>create-hash>ripemd160": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3460,7 +3465,7 @@
         "bn.js": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify>diffie-hellman>miller-rabin": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>diffie-hellman>miller-rabin": {
@@ -3482,7 +3487,7 @@
         "browserify>process": true,
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>create-hash>ripemd160": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>crypto-browserify>public-encrypt": {
@@ -3492,14 +3497,14 @@
         "browserify>crypto-browserify>public-encrypt>browserify-rsa": true,
         "browserify>crypto-browserify>public-encrypt>parse-asn1": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>public-encrypt>browserify-rsa": {
       "packages": {
         "bn.js": true,
         "browserify>buffer": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>public-encrypt>parse-asn1": {
@@ -3527,8 +3532,8 @@
       },
       "packages": {
         "browserify>process": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>events": {
@@ -3613,7 +3618,7 @@
     },
     "browserify>string_decoder": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>timers-browserify": {
@@ -3898,6 +3903,7 @@
         "browserify>buffer": true,
         "eth-lattice-keyring>gridplus-sdk>@ethereumjs/common": true,
         "eth-lattice-keyring>gridplus-sdk>@ethereumjs/tx": true,
+        "eth-lattice-keyring>gridplus-sdk>aes-js": true,
         "eth-lattice-keyring>gridplus-sdk>bech32": true,
         "eth-lattice-keyring>gridplus-sdk>bignumber.js": true,
         "eth-lattice-keyring>gridplus-sdk>bitwise": true,
@@ -3907,9 +3913,8 @@
         "eth-lattice-keyring>gridplus-sdk>rlp": true,
         "eth-lattice-keyring>gridplus-sdk>secp256k1": true,
         "eth-lattice-keyring>gridplus-sdk>uuid": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>hash.js": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
         "lodash": true
       }
     },
@@ -3956,6 +3961,11 @@
         "crypto": true
       }
     },
+    "eth-lattice-keyring>gridplus-sdk>aes-js": {
+      "globals": {
+        "define": true
+      }
+    },
     "eth-lattice-keyring>gridplus-sdk>bignumber.js": {
       "globals": {
         "crypto": true,
@@ -4082,7 +4092,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>ethereum-cryptography": true,
         "ethereumjs-util>rlp": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "eth-sig-util>ethereumjs-util>ethjs-util": {
@@ -4154,21 +4164,21 @@
       "packages": {
         "browserify>stream-browserify": true,
         "browserify>string_decoder": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
     "ethereumjs-util>create-hash>md5.js": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js>hash-base": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
     "ethereumjs-util>create-hash>md5.js>hash-base": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js>hash-base>readable-stream": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -4195,12 +4205,12 @@
         "browserify>assert": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify>create-hmac": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>hash.js": true,
         "ethereumjs-util>ethereum-cryptography>keccak": true,
         "ethereumjs-util>ethereum-cryptography>secp256k1": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "ethereumjs-util>ethereum-cryptography>browserify-aes": {
@@ -4209,7 +4219,7 @@
         "browserify>crypto-browserify>browserify-cipher>evp_bytestokey": true,
         "ethereumjs-util>create-hash>cipher-base": true,
         "ethereumjs-util>ethereum-cryptography>browserify-aes>buffer-xor": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -4218,6 +4228,18 @@
         "browserify>buffer": true
       }
     },
+    "ethereumjs-util>ethereum-cryptography>bs58check": {
+      "packages": {
+        "ethereumjs-util>create-hash": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check>bs58": true,
+        "koa>content-disposition>safe-buffer": true
+      }
+    },
+    "ethereumjs-util>ethereum-cryptography>bs58check>bs58": {
+      "packages": {
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true
+      }
+    },
     "ethereumjs-util>ethereum-cryptography>hash.js": {
       "packages": {
         "@metamask/ppom-validator>elliptic>minimalistic-assert": true,
@@ -4261,78 +4283,9 @@
         "browserify>buffer": true
       }
     },
-    "ethereumjs-wallet": {
-      "packages": {
-        "@truffle/codec>utf8": true,
-        "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>ethereumjs-util": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true,
-        "ethereumjs-wallet>scryptsy": true,
-        "ethereumjs-wallet>uuid": true
-      }
-    },
-    "ethereumjs-wallet>aes-js": {
-      "globals": {
-        "define": true
-      }
-    },
-    "ethereumjs-wallet>bs58check": {
-      "packages": {
-        "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>bs58check>bs58": true,
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>bs58check>bs58": {
-      "packages": {
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
-      }
-    },
-    "ethereumjs-wallet>bs58check>bs58>base-x": {
-      "packages": {
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>ethereumjs-util": {
-      "packages": {
-        "@metamask/ppom-validator>elliptic": true,
-        "bn.js": true,
-        "browserify>assert": true,
-        "browserify>buffer": true,
-        "eth-sig-util>ethereumjs-util>ethjs-util": true,
-        "ethereumjs-util>create-hash": true,
-        "ethereumjs-util>ethereum-cryptography": true,
-        "ethereumjs-util>rlp": true
-      }
-    },
     "ethereumjs-wallet>randombytes": {
       "globals": {
-        "crypto": true,
-        "msCrypto": true
-      },
-      "packages": {
-        "browserify>process": true,
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>safe-buffer": {
-      "packages": {
-        "browserify>buffer": true
-      }
-    },
-    "ethereumjs-wallet>scryptsy": {
-      "packages": {
-        "browserify>buffer": true,
-        "browserify>crypto-browserify>pbkdf2": true
-      }
-    },
-    "ethereumjs-wallet>uuid": {
-      "globals": {
-        "crypto": true,
-        "msCrypto": true
+        "crypto.getRandomValues": true
       }
     },
     "ethers>@ethersproject/random": {
@@ -4531,6 +4484,11 @@
         "readable-stream": true
       }
     },
+    "koa>content-disposition>safe-buffer": {
+      "packages": {
+        "browserify>buffer": true
+      }
+    },
     "koa>is-generator-function>has-tostringtag": {
       "packages": {
         "string.prototype.matchall>has-symbols": true
@@ -4609,6 +4567,16 @@
         "readable-stream>util-deprecate": true
       }
     },
+    "mocha>serialize-javascript>randombytes": {
+      "globals": {
+        "crypto": true,
+        "msCrypto": true
+      },
+      "packages": {
+        "browserify>process": true,
+        "koa>content-disposition>safe-buffer": true
+      }
+    },
     "mockttp>graphql-tag>tslib": {
       "globals": {
         "define": true
diff --git a/lavamoat/browserify/flask/policy.json b/lavamoat/browserify/flask/policy.json
index 08100deb2..e725d3af4 100644
--- a/lavamoat/browserify/flask/policy.json
+++ b/lavamoat/browserify/flask/policy.json
@@ -107,9 +107,14 @@
     },
     "@ensdomains/content-hash>multihashes>multibase": {
       "packages": {
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
         "@ensdomains/content-hash>multihashes>web-encoding": true,
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "browserify>buffer": true
+      }
+    },
+    "@ensdomains/content-hash>multihashes>multibase>base-x": {
+      "packages": {
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@ensdomains/content-hash>multihashes>web-encoding": {
@@ -492,7 +497,7 @@
       "packages": {
         "@ngraveio/bc-ur": true,
         "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "mockttp>graphql-tag>tslib": true
       }
     },
@@ -500,9 +505,9 @@
       "packages": {
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>secp256k1": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@keystonehq/metamask-airgapped-keyring": {
@@ -1106,7 +1111,7 @@
         "@metamask/eth-snap-keyring>@metamask/eth-sig-util": true,
         "browserify>buffer": true,
         "browserify>events": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "@metamask/eth-keyring-controller>@metamask/eth-simple-keyring>ethereum-cryptography": {
@@ -1167,7 +1172,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>ethereum-cryptography": true,
         "ethereumjs-util>rlp": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-ledger-bridge-keyring>hdkey": {
@@ -1176,7 +1181,7 @@
         "@metamask/eth-trezor-keyring>hdkey>coinstring": true,
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-ledger-bridge-keyring>hdkey>secp256k1": {
@@ -1186,7 +1191,7 @@
         "bn.js": true,
         "browserify>insert-module-globals>is-buffer": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-snap-keyring": {
@@ -1537,7 +1542,7 @@
         "@metamask/eth-trezor-keyring>hdkey>secp256k1": true,
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-trezor-keyring>hdkey>coinstring": {
@@ -1554,12 +1559,12 @@
         "bn.js": true,
         "browserify>insert-module-globals>is-buffer": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-trezor-keyring>hdkey>secp256k1>bip66": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/etherscan-link": {
@@ -1734,11 +1739,11 @@
         "@truffle/codec>utf8": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify": true,
+        "eth-lattice-keyring>gridplus-sdk>aes-js": true,
         "ethereumjs-util>ethereum-cryptography": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>scrypt-js": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>randombytes": true,
+        "mocha>serialize-javascript>randombytes": true,
         "uuid": true
       }
     },
@@ -3036,9 +3041,9 @@
         "bn.js": true,
         "browserify>buffer": true,
         "ethereumjs-util": true,
-        "ethereumjs-wallet>randombytes": true,
         "ethjs>ethjs-unit": true,
-        "ethjs>number-to-bn": true
+        "ethjs>number-to-bn": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "@truffle/codec>web3-utils>ethereum-bloom-filters": {
@@ -3097,7 +3102,7 @@
         "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>js-sha3": true,
         "browserify>buffer": true,
         "eth-ens-namehash": true,
-        "ethereumjs-wallet>bs58check>bs58": true
+        "ethereumjs-util>ethereum-cryptography>bs58check>bs58": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>@ensdomains/address-encoder": {
@@ -3130,8 +3135,8 @@
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>cids>multibase": {
       "packages": {
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
+        "browserify>buffer": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>cids>multicodec": {
@@ -3155,8 +3160,8 @@
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>multihashes>multibase": {
       "packages": {
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
+        "browserify>buffer": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>ethers": {
@@ -3320,7 +3325,7 @@
     },
     "addons-linter>sha.js": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3410,7 +3415,7 @@
         "browserify>crypto-browserify>public-encrypt": true,
         "browserify>crypto-browserify>randomfill": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>browserify-cipher": {
@@ -3437,7 +3442,7 @@
     "browserify>crypto-browserify>browserify-cipher>evp_bytestokey": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>crypto-browserify>browserify-sign": {
@@ -3466,7 +3471,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>create-hash>cipher-base": true,
         "ethereumjs-util>create-hash>ripemd160": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3475,7 +3480,7 @@
         "bn.js": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify>diffie-hellman>miller-rabin": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>diffie-hellman>miller-rabin": {
@@ -3497,7 +3502,7 @@
         "browserify>process": true,
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>create-hash>ripemd160": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>crypto-browserify>public-encrypt": {
@@ -3507,14 +3512,14 @@
         "browserify>crypto-browserify>public-encrypt>browserify-rsa": true,
         "browserify>crypto-browserify>public-encrypt>parse-asn1": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>public-encrypt>browserify-rsa": {
       "packages": {
         "bn.js": true,
         "browserify>buffer": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>public-encrypt>parse-asn1": {
@@ -3542,8 +3547,8 @@
       },
       "packages": {
         "browserify>process": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>events": {
@@ -3628,7 +3633,7 @@
     },
     "browserify>string_decoder": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>timers-browserify": {
@@ -3913,6 +3918,7 @@
         "browserify>buffer": true,
         "eth-lattice-keyring>gridplus-sdk>@ethereumjs/common": true,
         "eth-lattice-keyring>gridplus-sdk>@ethereumjs/tx": true,
+        "eth-lattice-keyring>gridplus-sdk>aes-js": true,
         "eth-lattice-keyring>gridplus-sdk>bech32": true,
         "eth-lattice-keyring>gridplus-sdk>bignumber.js": true,
         "eth-lattice-keyring>gridplus-sdk>bitwise": true,
@@ -3922,9 +3928,8 @@
         "eth-lattice-keyring>gridplus-sdk>rlp": true,
         "eth-lattice-keyring>gridplus-sdk>secp256k1": true,
         "eth-lattice-keyring>gridplus-sdk>uuid": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>hash.js": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
         "lodash": true
       }
     },
@@ -3971,6 +3976,11 @@
         "crypto": true
       }
     },
+    "eth-lattice-keyring>gridplus-sdk>aes-js": {
+      "globals": {
+        "define": true
+      }
+    },
     "eth-lattice-keyring>gridplus-sdk>bignumber.js": {
       "globals": {
         "crypto": true,
@@ -4097,7 +4107,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>ethereum-cryptography": true,
         "ethereumjs-util>rlp": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "eth-sig-util>ethereumjs-util>ethjs-util": {
@@ -4169,21 +4179,21 @@
       "packages": {
         "browserify>stream-browserify": true,
         "browserify>string_decoder": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
     "ethereumjs-util>create-hash>md5.js": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js>hash-base": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
     "ethereumjs-util>create-hash>md5.js>hash-base": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js>hash-base>readable-stream": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -4210,12 +4220,12 @@
         "browserify>assert": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify>create-hmac": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>hash.js": true,
         "ethereumjs-util>ethereum-cryptography>keccak": true,
         "ethereumjs-util>ethereum-cryptography>secp256k1": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "ethereumjs-util>ethereum-cryptography>browserify-aes": {
@@ -4224,7 +4234,7 @@
         "browserify>crypto-browserify>browserify-cipher>evp_bytestokey": true,
         "ethereumjs-util>create-hash>cipher-base": true,
         "ethereumjs-util>ethereum-cryptography>browserify-aes>buffer-xor": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -4233,6 +4243,18 @@
         "browserify>buffer": true
       }
     },
+    "ethereumjs-util>ethereum-cryptography>bs58check": {
+      "packages": {
+        "ethereumjs-util>create-hash": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check>bs58": true,
+        "koa>content-disposition>safe-buffer": true
+      }
+    },
+    "ethereumjs-util>ethereum-cryptography>bs58check>bs58": {
+      "packages": {
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true
+      }
+    },
     "ethereumjs-util>ethereum-cryptography>hash.js": {
       "packages": {
         "@metamask/ppom-validator>elliptic>minimalistic-assert": true,
@@ -4276,78 +4298,9 @@
         "browserify>buffer": true
       }
     },
-    "ethereumjs-wallet": {
-      "packages": {
-        "@truffle/codec>utf8": true,
-        "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>ethereumjs-util": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true,
-        "ethereumjs-wallet>scryptsy": true,
-        "ethereumjs-wallet>uuid": true
-      }
-    },
-    "ethereumjs-wallet>aes-js": {
-      "globals": {
-        "define": true
-      }
-    },
-    "ethereumjs-wallet>bs58check": {
-      "packages": {
-        "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>bs58check>bs58": true,
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>bs58check>bs58": {
-      "packages": {
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
-      }
-    },
-    "ethereumjs-wallet>bs58check>bs58>base-x": {
-      "packages": {
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>ethereumjs-util": {
-      "packages": {
-        "@metamask/ppom-validator>elliptic": true,
-        "bn.js": true,
-        "browserify>assert": true,
-        "browserify>buffer": true,
-        "eth-sig-util>ethereumjs-util>ethjs-util": true,
-        "ethereumjs-util>create-hash": true,
-        "ethereumjs-util>ethereum-cryptography": true,
-        "ethereumjs-util>rlp": true
-      }
-    },
     "ethereumjs-wallet>randombytes": {
       "globals": {
-        "crypto": true,
-        "msCrypto": true
-      },
-      "packages": {
-        "browserify>process": true,
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>safe-buffer": {
-      "packages": {
-        "browserify>buffer": true
-      }
-    },
-    "ethereumjs-wallet>scryptsy": {
-      "packages": {
-        "browserify>buffer": true,
-        "browserify>crypto-browserify>pbkdf2": true
-      }
-    },
-    "ethereumjs-wallet>uuid": {
-      "globals": {
-        "crypto": true,
-        "msCrypto": true
+        "crypto.getRandomValues": true
       }
     },
     "ethers>@ethersproject/random": {
@@ -4546,6 +4499,11 @@
         "readable-stream": true
       }
     },
+    "koa>content-disposition>safe-buffer": {
+      "packages": {
+        "browserify>buffer": true
+      }
+    },
     "koa>is-generator-function>has-tostringtag": {
       "packages": {
         "string.prototype.matchall>has-symbols": true
@@ -4624,6 +4582,16 @@
         "readable-stream>util-deprecate": true
       }
     },
+    "mocha>serialize-javascript>randombytes": {
+      "globals": {
+        "crypto": true,
+        "msCrypto": true
+      },
+      "packages": {
+        "browserify>process": true,
+        "koa>content-disposition>safe-buffer": true
+      }
+    },
     "mockttp>graphql-tag>tslib": {
       "globals": {
         "define": true
diff --git a/lavamoat/browserify/main/policy.json b/lavamoat/browserify/main/policy.json
index 3207a448f..12cd90e66 100644
--- a/lavamoat/browserify/main/policy.json
+++ b/lavamoat/browserify/main/policy.json
@@ -107,9 +107,14 @@
     },
     "@ensdomains/content-hash>multihashes>multibase": {
       "packages": {
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
         "@ensdomains/content-hash>multihashes>web-encoding": true,
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "browserify>buffer": true
+      }
+    },
+    "@ensdomains/content-hash>multihashes>multibase>base-x": {
+      "packages": {
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@ensdomains/content-hash>multihashes>web-encoding": {
@@ -492,7 +497,7 @@
       "packages": {
         "@ngraveio/bc-ur": true,
         "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "mockttp>graphql-tag>tslib": true
       }
     },
@@ -500,9 +505,9 @@
       "packages": {
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>secp256k1": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@keystonehq/metamask-airgapped-keyring": {
@@ -1035,7 +1040,7 @@
         "@metamask/eth-snap-keyring>@metamask/eth-sig-util": true,
         "browserify>buffer": true,
         "browserify>events": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "@metamask/eth-keyring-controller>@metamask/eth-simple-keyring>ethereum-cryptography": {
@@ -1096,7 +1101,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>ethereum-cryptography": true,
         "ethereumjs-util>rlp": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-ledger-bridge-keyring>hdkey": {
@@ -1105,7 +1110,7 @@
         "@metamask/eth-trezor-keyring>hdkey>coinstring": true,
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-ledger-bridge-keyring>hdkey>secp256k1": {
@@ -1115,7 +1120,7 @@
         "bn.js": true,
         "browserify>insert-module-globals>is-buffer": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-snap-keyring>@metamask/eth-sig-util": {
@@ -1409,7 +1414,7 @@
         "@metamask/eth-trezor-keyring>hdkey>secp256k1": true,
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-trezor-keyring>hdkey>coinstring": {
@@ -1426,12 +1431,12 @@
         "bn.js": true,
         "browserify>insert-module-globals>is-buffer": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-trezor-keyring>hdkey>secp256k1>bip66": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/etherscan-link": {
@@ -1583,11 +1588,11 @@
         "@truffle/codec>utf8": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify": true,
+        "eth-lattice-keyring>gridplus-sdk>aes-js": true,
         "ethereumjs-util>ethereum-cryptography": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>scrypt-js": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>randombytes": true,
+        "mocha>serialize-javascript>randombytes": true,
         "uuid": true
       }
     },
@@ -2486,9 +2491,9 @@
         "bn.js": true,
         "browserify>buffer": true,
         "ethereumjs-util": true,
-        "ethereumjs-wallet>randombytes": true,
         "ethjs>ethjs-unit": true,
-        "ethjs>number-to-bn": true
+        "ethjs>number-to-bn": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "@truffle/codec>web3-utils>ethereum-bloom-filters": {
@@ -2547,7 +2552,7 @@
         "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>js-sha3": true,
         "browserify>buffer": true,
         "eth-ens-namehash": true,
-        "ethereumjs-wallet>bs58check>bs58": true
+        "ethereumjs-util>ethereum-cryptography>bs58check>bs58": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>@ensdomains/address-encoder": {
@@ -2580,8 +2585,8 @@
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>cids>multibase": {
       "packages": {
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
+        "browserify>buffer": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>cids>multicodec": {
@@ -2605,8 +2610,8 @@
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>multihashes>multibase": {
       "packages": {
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
+        "browserify>buffer": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>ethers": {
@@ -2770,7 +2775,7 @@
     },
     "addons-linter>sha.js": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -2860,7 +2865,7 @@
         "browserify>crypto-browserify>public-encrypt": true,
         "browserify>crypto-browserify>randomfill": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>browserify-cipher": {
@@ -2887,7 +2892,7 @@
     "browserify>crypto-browserify>browserify-cipher>evp_bytestokey": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>crypto-browserify>browserify-sign": {
@@ -2916,7 +2921,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>create-hash>cipher-base": true,
         "ethereumjs-util>create-hash>ripemd160": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -2925,7 +2930,7 @@
         "bn.js": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify>diffie-hellman>miller-rabin": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>diffie-hellman>miller-rabin": {
@@ -2947,7 +2952,7 @@
         "browserify>process": true,
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>create-hash>ripemd160": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>crypto-browserify>public-encrypt": {
@@ -2957,14 +2962,14 @@
         "browserify>crypto-browserify>public-encrypt>browserify-rsa": true,
         "browserify>crypto-browserify>public-encrypt>parse-asn1": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>public-encrypt>browserify-rsa": {
       "packages": {
         "bn.js": true,
         "browserify>buffer": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>public-encrypt>parse-asn1": {
@@ -2992,8 +2997,8 @@
       },
       "packages": {
         "browserify>process": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>events": {
@@ -3078,7 +3083,7 @@
     },
     "browserify>string_decoder": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>timers-browserify": {
@@ -3347,6 +3352,7 @@
         "browserify>buffer": true,
         "eth-lattice-keyring>gridplus-sdk>@ethereumjs/common": true,
         "eth-lattice-keyring>gridplus-sdk>@ethereumjs/tx": true,
+        "eth-lattice-keyring>gridplus-sdk>aes-js": true,
         "eth-lattice-keyring>gridplus-sdk>bech32": true,
         "eth-lattice-keyring>gridplus-sdk>bignumber.js": true,
         "eth-lattice-keyring>gridplus-sdk>bitwise": true,
@@ -3356,9 +3362,8 @@
         "eth-lattice-keyring>gridplus-sdk>rlp": true,
         "eth-lattice-keyring>gridplus-sdk>secp256k1": true,
         "eth-lattice-keyring>gridplus-sdk>uuid": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>hash.js": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
         "lodash": true
       }
     },
@@ -3405,6 +3410,11 @@
         "crypto": true
       }
     },
+    "eth-lattice-keyring>gridplus-sdk>aes-js": {
+      "globals": {
+        "define": true
+      }
+    },
     "eth-lattice-keyring>gridplus-sdk>bignumber.js": {
       "globals": {
         "crypto": true,
@@ -3531,7 +3541,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>ethereum-cryptography": true,
         "ethereumjs-util>rlp": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "eth-sig-util>ethereumjs-util>ethjs-util": {
@@ -3603,21 +3613,21 @@
       "packages": {
         "browserify>stream-browserify": true,
         "browserify>string_decoder": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
     "ethereumjs-util>create-hash>md5.js": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js>hash-base": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
     "ethereumjs-util>create-hash>md5.js>hash-base": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js>hash-base>readable-stream": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3644,12 +3654,12 @@
         "browserify>assert": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify>create-hmac": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>hash.js": true,
         "ethereumjs-util>ethereum-cryptography>keccak": true,
         "ethereumjs-util>ethereum-cryptography>secp256k1": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "ethereumjs-util>ethereum-cryptography>browserify-aes": {
@@ -3658,7 +3668,7 @@
         "browserify>crypto-browserify>browserify-cipher>evp_bytestokey": true,
         "ethereumjs-util>create-hash>cipher-base": true,
         "ethereumjs-util>ethereum-cryptography>browserify-aes>buffer-xor": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3667,6 +3677,18 @@
         "browserify>buffer": true
       }
     },
+    "ethereumjs-util>ethereum-cryptography>bs58check": {
+      "packages": {
+        "ethereumjs-util>create-hash": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check>bs58": true,
+        "koa>content-disposition>safe-buffer": true
+      }
+    },
+    "ethereumjs-util>ethereum-cryptography>bs58check>bs58": {
+      "packages": {
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true
+      }
+    },
     "ethereumjs-util>ethereum-cryptography>hash.js": {
       "packages": {
         "@metamask/ppom-validator>elliptic>minimalistic-assert": true,
@@ -3710,78 +3732,9 @@
         "browserify>buffer": true
       }
     },
-    "ethereumjs-wallet": {
-      "packages": {
-        "@truffle/codec>utf8": true,
-        "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>ethereumjs-util": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true,
-        "ethereumjs-wallet>scryptsy": true,
-        "ethereumjs-wallet>uuid": true
-      }
-    },
-    "ethereumjs-wallet>aes-js": {
-      "globals": {
-        "define": true
-      }
-    },
-    "ethereumjs-wallet>bs58check": {
-      "packages": {
-        "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>bs58check>bs58": true,
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>bs58check>bs58": {
-      "packages": {
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
-      }
-    },
-    "ethereumjs-wallet>bs58check>bs58>base-x": {
-      "packages": {
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>ethereumjs-util": {
-      "packages": {
-        "@metamask/ppom-validator>elliptic": true,
-        "bn.js": true,
-        "browserify>assert": true,
-        "browserify>buffer": true,
-        "eth-sig-util>ethereumjs-util>ethjs-util": true,
-        "ethereumjs-util>create-hash": true,
-        "ethereumjs-util>ethereum-cryptography": true,
-        "ethereumjs-util>rlp": true
-      }
-    },
     "ethereumjs-wallet>randombytes": {
       "globals": {
-        "crypto": true,
-        "msCrypto": true
-      },
-      "packages": {
-        "browserify>process": true,
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>safe-buffer": {
-      "packages": {
-        "browserify>buffer": true
-      }
-    },
-    "ethereumjs-wallet>scryptsy": {
-      "packages": {
-        "browserify>buffer": true,
-        "browserify>crypto-browserify>pbkdf2": true
-      }
-    },
-    "ethereumjs-wallet>uuid": {
-      "globals": {
-        "crypto": true,
-        "msCrypto": true
+        "crypto.getRandomValues": true
       }
     },
     "ethers>@ethersproject/random": {
@@ -3980,6 +3933,11 @@
         "readable-stream": true
       }
     },
+    "koa>content-disposition>safe-buffer": {
+      "packages": {
+        "browserify>buffer": true
+      }
+    },
     "koa>is-generator-function>has-tostringtag": {
       "packages": {
         "string.prototype.matchall>has-symbols": true
@@ -4040,6 +3998,16 @@
         "Intl": true
       }
     },
+    "mocha>serialize-javascript>randombytes": {
+      "globals": {
+        "crypto": true,
+        "msCrypto": true
+      },
+      "packages": {
+        "browserify>process": true,
+        "koa>content-disposition>safe-buffer": true
+      }
+    },
     "mockttp>graphql-tag>tslib": {
       "globals": {
         "define": true
diff --git a/lavamoat/browserify/mmi/policy.json b/lavamoat/browserify/mmi/policy.json
index d8c191d6d..db6f4bba9 100644
--- a/lavamoat/browserify/mmi/policy.json
+++ b/lavamoat/browserify/mmi/policy.json
@@ -107,9 +107,14 @@
     },
     "@ensdomains/content-hash>multihashes>multibase": {
       "packages": {
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
         "@ensdomains/content-hash>multihashes>web-encoding": true,
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "browserify>buffer": true
+      }
+    },
+    "@ensdomains/content-hash>multihashes>multibase>base-x": {
+      "packages": {
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@ensdomains/content-hash>multihashes>web-encoding": {
@@ -492,7 +497,7 @@
       "packages": {
         "@ngraveio/bc-ur": true,
         "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "mockttp>graphql-tag>tslib": true
       }
     },
@@ -500,9 +505,9 @@
       "packages": {
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>secp256k1": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@keystonehq/metamask-airgapped-keyring": {
@@ -905,7 +910,7 @@
         "browserify>process": true,
         "browserify>stream-browserify": true,
         "browserify>util": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask-institutional/sdk>jsonwebtoken>jws>jwa": {
@@ -914,7 +919,7 @@
         "@metamask-institutional/sdk>jsonwebtoken>jws>jwa>ecdsa-sig-formatter": true,
         "browserify>crypto-browserify": true,
         "browserify>util": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask-institutional/sdk>jsonwebtoken>jws>jwa>buffer-equal-constant-time": {
@@ -924,7 +929,7 @@
     },
     "@metamask-institutional/sdk>jsonwebtoken>jws>jwa>ecdsa-sig-formatter": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask-institutional/transaction-update": {
@@ -1263,7 +1268,7 @@
         "@metamask/eth-snap-keyring>@metamask/eth-sig-util": true,
         "browserify>buffer": true,
         "browserify>events": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "@metamask/eth-keyring-controller>@metamask/eth-simple-keyring>ethereum-cryptography": {
@@ -1324,7 +1329,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>ethereum-cryptography": true,
         "ethereumjs-util>rlp": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-ledger-bridge-keyring>hdkey": {
@@ -1333,7 +1338,7 @@
         "@metamask/eth-trezor-keyring>hdkey>coinstring": true,
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-ledger-bridge-keyring>hdkey>secp256k1": {
@@ -1343,7 +1348,7 @@
         "bn.js": true,
         "browserify>insert-module-globals>is-buffer": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-snap-keyring>@metamask/eth-sig-util": {
@@ -1637,7 +1642,7 @@
         "@metamask/eth-trezor-keyring>hdkey>secp256k1": true,
         "browserify>assert": true,
         "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-trezor-keyring>hdkey>coinstring": {
@@ -1654,12 +1659,12 @@
         "bn.js": true,
         "browserify>insert-module-globals>is-buffer": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/eth-trezor-keyring>hdkey>secp256k1>bip66": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "@metamask/etherscan-link": {
@@ -1811,11 +1816,11 @@
         "@truffle/codec>utf8": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify": true,
+        "eth-lattice-keyring>gridplus-sdk>aes-js": true,
         "ethereumjs-util>ethereum-cryptography": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>scrypt-js": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>randombytes": true,
+        "mocha>serialize-javascript>randombytes": true,
         "uuid": true
       }
     },
@@ -2714,9 +2719,9 @@
         "bn.js": true,
         "browserify>buffer": true,
         "ethereumjs-util": true,
-        "ethereumjs-wallet>randombytes": true,
         "ethjs>ethjs-unit": true,
-        "ethjs>number-to-bn": true
+        "ethjs>number-to-bn": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "@truffle/codec>web3-utils>ethereum-bloom-filters": {
@@ -2775,7 +2780,7 @@
         "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>js-sha3": true,
         "browserify>buffer": true,
         "eth-ens-namehash": true,
-        "ethereumjs-wallet>bs58check>bs58": true
+        "ethereumjs-util>ethereum-cryptography>bs58check>bs58": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>@ensdomains/address-encoder": {
@@ -2808,8 +2813,8 @@
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>cids>multibase": {
       "packages": {
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
+        "browserify>buffer": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>cids>multicodec": {
@@ -2833,8 +2838,8 @@
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>content-hash>multihashes>multibase": {
       "packages": {
-        "browserify>buffer": true,
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true,
+        "browserify>buffer": true
       }
     },
     "@truffle/decoder>@truffle/encoder>@ensdomains/ensjs>ethers": {
@@ -2998,7 +3003,7 @@
     },
     "addons-linter>sha.js": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3088,7 +3093,7 @@
         "browserify>crypto-browserify>public-encrypt": true,
         "browserify>crypto-browserify>randomfill": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>browserify-cipher": {
@@ -3115,7 +3120,7 @@
     "browserify>crypto-browserify>browserify-cipher>evp_bytestokey": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>crypto-browserify>browserify-sign": {
@@ -3144,7 +3149,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>create-hash>cipher-base": true,
         "ethereumjs-util>create-hash>ripemd160": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3153,7 +3158,7 @@
         "bn.js": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify>diffie-hellman>miller-rabin": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>diffie-hellman>miller-rabin": {
@@ -3175,7 +3180,7 @@
         "browserify>process": true,
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>create-hash>ripemd160": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>crypto-browserify>public-encrypt": {
@@ -3185,14 +3190,14 @@
         "browserify>crypto-browserify>public-encrypt>browserify-rsa": true,
         "browserify>crypto-browserify>public-encrypt>parse-asn1": true,
         "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>public-encrypt>browserify-rsa": {
       "packages": {
         "bn.js": true,
         "browserify>buffer": true,
-        "ethereumjs-wallet>randombytes": true
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>crypto-browserify>public-encrypt>parse-asn1": {
@@ -3220,8 +3225,8 @@
       },
       "packages": {
         "browserify>process": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "browserify>events": {
@@ -3306,7 +3311,7 @@
     },
     "browserify>string_decoder": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>timers-browserify": {
@@ -3575,6 +3580,7 @@
         "browserify>buffer": true,
         "eth-lattice-keyring>gridplus-sdk>@ethereumjs/common": true,
         "eth-lattice-keyring>gridplus-sdk>@ethereumjs/tx": true,
+        "eth-lattice-keyring>gridplus-sdk>aes-js": true,
         "eth-lattice-keyring>gridplus-sdk>bech32": true,
         "eth-lattice-keyring>gridplus-sdk>bignumber.js": true,
         "eth-lattice-keyring>gridplus-sdk>bitwise": true,
@@ -3584,9 +3590,8 @@
         "eth-lattice-keyring>gridplus-sdk>rlp": true,
         "eth-lattice-keyring>gridplus-sdk>secp256k1": true,
         "eth-lattice-keyring>gridplus-sdk>uuid": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>hash.js": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
         "lodash": true
       }
     },
@@ -3633,6 +3638,11 @@
         "crypto": true
       }
     },
+    "eth-lattice-keyring>gridplus-sdk>aes-js": {
+      "globals": {
+        "define": true
+      }
+    },
     "eth-lattice-keyring>gridplus-sdk>bignumber.js": {
       "globals": {
         "crypto": true,
@@ -3759,7 +3769,7 @@
         "ethereumjs-util>create-hash": true,
         "ethereumjs-util>ethereum-cryptography": true,
         "ethereumjs-util>rlp": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "eth-sig-util>ethereumjs-util>ethjs-util": {
@@ -3831,21 +3841,21 @@
       "packages": {
         "browserify>stream-browserify": true,
         "browserify>string_decoder": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
     "ethereumjs-util>create-hash>md5.js": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js>hash-base": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
     "ethereumjs-util>create-hash>md5.js>hash-base": {
       "packages": {
         "ethereumjs-util>create-hash>md5.js>hash-base>readable-stream": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3872,12 +3882,12 @@
         "browserify>assert": true,
         "browserify>buffer": true,
         "browserify>crypto-browserify>create-hmac": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check": true,
         "ethereumjs-util>ethereum-cryptography>hash.js": true,
         "ethereumjs-util>ethereum-cryptography>keccak": true,
         "ethereumjs-util>ethereum-cryptography>secp256k1": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true,
+        "mocha>serialize-javascript>randombytes": true
       }
     },
     "ethereumjs-util>ethereum-cryptography>browserify-aes": {
@@ -3886,7 +3896,7 @@
         "browserify>crypto-browserify>browserify-cipher>evp_bytestokey": true,
         "ethereumjs-util>create-hash>cipher-base": true,
         "ethereumjs-util>ethereum-cryptography>browserify-aes>buffer-xor": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "pumpify>inherits": true
       }
     },
@@ -3895,6 +3905,18 @@
         "browserify>buffer": true
       }
     },
+    "ethereumjs-util>ethereum-cryptography>bs58check": {
+      "packages": {
+        "ethereumjs-util>create-hash": true,
+        "ethereumjs-util>ethereum-cryptography>bs58check>bs58": true,
+        "koa>content-disposition>safe-buffer": true
+      }
+    },
+    "ethereumjs-util>ethereum-cryptography>bs58check>bs58": {
+      "packages": {
+        "@ensdomains/content-hash>multihashes>multibase>base-x": true
+      }
+    },
     "ethereumjs-util>ethereum-cryptography>hash.js": {
       "packages": {
         "@metamask/ppom-validator>elliptic>minimalistic-assert": true,
@@ -3938,78 +3960,9 @@
         "browserify>buffer": true
       }
     },
-    "ethereumjs-wallet": {
-      "packages": {
-        "@truffle/codec>utf8": true,
-        "browserify>crypto-browserify": true,
-        "ethereumjs-wallet>aes-js": true,
-        "ethereumjs-wallet>bs58check": true,
-        "ethereumjs-wallet>ethereumjs-util": true,
-        "ethereumjs-wallet>randombytes": true,
-        "ethereumjs-wallet>safe-buffer": true,
-        "ethereumjs-wallet>scryptsy": true,
-        "ethereumjs-wallet>uuid": true
-      }
-    },
-    "ethereumjs-wallet>aes-js": {
-      "globals": {
-        "define": true
-      }
-    },
-    "ethereumjs-wallet>bs58check": {
-      "packages": {
-        "ethereumjs-util>create-hash": true,
-        "ethereumjs-wallet>bs58check>bs58": true,
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>bs58check>bs58": {
-      "packages": {
-        "ethereumjs-wallet>bs58check>bs58>base-x": true
-      }
-    },
-    "ethereumjs-wallet>bs58check>bs58>base-x": {
-      "packages": {
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>ethereumjs-util": {
-      "packages": {
-        "@metamask/ppom-validator>elliptic": true,
-        "bn.js": true,
-        "browserify>assert": true,
-        "browserify>buffer": true,
-        "eth-sig-util>ethereumjs-util>ethjs-util": true,
-        "ethereumjs-util>create-hash": true,
-        "ethereumjs-util>ethereum-cryptography": true,
-        "ethereumjs-util>rlp": true
-      }
-    },
     "ethereumjs-wallet>randombytes": {
       "globals": {
-        "crypto": true,
-        "msCrypto": true
-      },
-      "packages": {
-        "browserify>process": true,
-        "ethereumjs-wallet>safe-buffer": true
-      }
-    },
-    "ethereumjs-wallet>safe-buffer": {
-      "packages": {
-        "browserify>buffer": true
-      }
-    },
-    "ethereumjs-wallet>scryptsy": {
-      "packages": {
-        "browserify>buffer": true,
-        "browserify>crypto-browserify>pbkdf2": true
-      }
-    },
-    "ethereumjs-wallet>uuid": {
-      "globals": {
-        "crypto": true,
-        "msCrypto": true
+        "crypto.getRandomValues": true
       }
     },
     "ethers>@ethersproject/random": {
@@ -4208,6 +4161,11 @@
         "readable-stream": true
       }
     },
+    "koa>content-disposition>safe-buffer": {
+      "packages": {
+        "browserify>buffer": true
+      }
+    },
     "koa>is-generator-function>has-tostringtag": {
       "packages": {
         "string.prototype.matchall>has-symbols": true
@@ -4268,6 +4226,16 @@
         "Intl": true
       }
     },
+    "mocha>serialize-javascript>randombytes": {
+      "globals": {
+        "crypto": true,
+        "msCrypto": true
+      },
+      "packages": {
+        "browserify>process": true,
+        "koa>content-disposition>safe-buffer": true
+      }
+    },
     "mockttp>graphql-tag>tslib": {
       "globals": {
         "define": true
diff --git a/lavamoat/build-system/policy.json b/lavamoat/build-system/policy.json
index 4db67787c..4ab9521cf 100644
--- a/lavamoat/build-system/policy.json
+++ b/lavamoat/build-system/policy.json
@@ -1730,7 +1730,7 @@
         "@lavamoat/lavapack>umd": true,
         "browserify>JSONStream": true,
         "browserify>browser-pack>through2": true,
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "watchify>defined": true
       }
     },
@@ -1947,7 +1947,7 @@
     },
     "browserify>string_decoder": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "browserify>syntax-error": {
@@ -3273,11 +3273,6 @@
         "eslint>strip-ansi>ansi-regex": true
       }
     },
-    "ethereumjs-wallet>safe-buffer": {
-      "builtin": {
-        "buffer": true
-      }
-    },
     "fancy-log": {
       "builtin": {
         "console.Console": true
@@ -6064,9 +6059,9 @@
     },
     "gulp>vinyl-fs>remove-bom-stream": {
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true,
         "gulp>vinyl-fs>remove-bom-buffer": true,
-        "gulp>vinyl-fs>remove-bom-stream>through2": true
+        "gulp>vinyl-fs>remove-bom-stream>through2": true,
+        "koa>content-disposition>safe-buffer": true
       }
     },
     "gulp>vinyl-fs>remove-bom-stream>through2": {
@@ -6172,6 +6167,11 @@
         "define": true
       }
     },
+    "koa>content-disposition>safe-buffer": {
+      "builtin": {
+        "buffer": true
+      }
+    },
     "koa>is-generator-function>has-tostringtag": {
       "packages": {
         "string.prototype.matchall>has-symbols": true
@@ -8751,7 +8751,7 @@
         "util.inherits": true
       },
       "packages": {
-        "ethereumjs-wallet>safe-buffer": true,
+        "koa>content-disposition>safe-buffer": true,
         "readable-stream": true
       }
     },
diff --git a/package.json b/package.json
index 88a03d3bd..7ab36645e 100644
--- a/package.json
+++ b/package.json
@@ -310,7 +310,6 @@
     "ethereum-ens-network-map": "^1.0.2",
     "ethereumjs-abi": "^0.6.4",
     "ethereumjs-util": "^7.0.10",
-    "ethereumjs-wallet": "^0.6.4",
     "ethjs": "^0.4.0",
     "ethjs-contract": "^0.2.3",
     "ethjs-query": "^0.3.4",
diff --git a/ui/components/multichain/import-account/import-account.js b/ui/components/multichain/import-account/import-account.js
index 478a2e3ac..6b266425b 100644
--- a/ui/components/multichain/import-account/import-account.js
+++ b/ui/components/multichain/import-account/import-account.js
@@ -79,7 +79,7 @@ export const ImportAccount = ({ onActionComplete }) => {
   }
 
   function getLoadingMessage(strategy) {
-    if (strategy === 'JSON File') {
+    if (strategy === 'json') {
       return (
         <>
           <Text width={BlockSize.ThreeFourths} fontWeight={FontWeight.Bold}>
diff --git a/ui/components/multichain/import-account/json.js b/ui/components/multichain/import-account/json.js
index 7dd9e0235..8ba553832 100644
--- a/ui/components/multichain/import-account/json.js
+++ b/ui/components/multichain/import-account/json.js
@@ -46,7 +46,7 @@ export default function JsonImportSubview({
     if (isPrimaryDisabled) {
       displayWarning(t('needImportFile'));
     } else {
-      importAccountFunc('JSON File', [fileContents, password]);
+      importAccountFunc('json', [fileContents, password]);
     }
   }
 
diff --git a/ui/components/multichain/import-account/json.test.tsx b/ui/components/multichain/import-account/json.test.tsx
index 26795e830..5798b68f3 100644
--- a/ui/components/multichain/import-account/json.test.tsx
+++ b/ui/components/multichain/import-account/json.test.tsx
@@ -63,7 +63,7 @@ describe('Json', () => {
     fireEvent.click(importButton);
 
     await waitFor(() => {
-      expect(mockImportFunc).toHaveBeenCalledWith('JSON File', ['0', '']);
+      expect(mockImportFunc).toHaveBeenCalledWith('json', ['0', '']);
     });
   });
 
@@ -102,10 +102,7 @@ describe('Json', () => {
     fireEvent.click(importButton);
 
     await waitFor(() => {
-      expect(mockImportFunc).toHaveBeenCalledWith('JSON File', [
-        '0',
-        'password',
-      ]);
+      expect(mockImportFunc).toHaveBeenCalledWith('json', ['0', 'password']);
     });
   });
 });
diff --git a/ui/components/multichain/import-account/private-key.js b/ui/components/multichain/import-account/private-key.js
index 958b4ca87..ba0640d2e 100644
--- a/ui/components/multichain/import-account/private-key.js
+++ b/ui/components/multichain/import-account/private-key.js
@@ -31,7 +31,7 @@ export default function PrivateKeyImportView({
   }
 
   function _importAccountFunc() {
-    importAccountFunc('Private Key', [privateKey]);
+    importAccountFunc('privateKey', [privateKey]);
   }
 
   return (
diff --git a/yarn.lock b/yarn.lock
index 8b6b0fd81..417ab089b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -16278,23 +16278,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ethereumjs-wallet@npm:^0.6.4":
-  version: 0.6.5
-  resolution: "ethereumjs-wallet@npm:0.6.5"
-  dependencies:
-    aes-js: "npm:^3.1.1"
-    bs58check: "npm:^2.1.2"
-    ethereum-cryptography: "npm:^0.1.3"
-    ethereumjs-util: "npm:^6.0.0"
-    randombytes: "npm:^2.0.6"
-    safe-buffer: "npm:^5.1.2"
-    scryptsy: "npm:^1.2.1"
-    utf8: "npm:^3.0.0"
-    uuid: "npm:^3.3.2"
-  checksum: 011d4205dfbf4c405b02fe77b7d4924ed39ab3124bc2d982cc436fd052ccf7392a1a408c704bf159d7fc5b000dfce254b313f7d5a224e6e950f2444de4904953
-  languageName: node
-  linkType: hard
-
 "ethereumjs-wallet@npm:^1.0.1":
   version: 1.0.2
   resolution: "ethereumjs-wallet@npm:1.0.2"
@@ -24419,7 +24402,6 @@ __metadata:
     ethereum-ens-network-map: "npm:^1.0.2"
     ethereumjs-abi: "npm:^0.6.4"
     ethereumjs-util: "npm:^7.0.10"
-    ethereumjs-wallet: "npm:^0.6.4"
     ethjs: "npm:^0.4.0"
     ethjs-contract: "npm:^0.2.3"
     ethjs-query: "npm:^0.3.4"
@@ -28642,7 +28624,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"randombytes@npm:2.1.0, randombytes@npm:^2.0.0, randombytes@npm:^2.0.1, randombytes@npm:^2.0.5, randombytes@npm:^2.0.6, randombytes@npm:^2.1.0":
+"randombytes@npm:2.1.0, randombytes@npm:^2.0.0, randombytes@npm:^2.0.1, randombytes@npm:^2.0.5, randombytes@npm:^2.1.0":
   version: 2.1.0
   resolution: "randombytes@npm:2.1.0"
   dependencies:
@@ -30688,15 +30670,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"scryptsy@npm:^1.2.1":
-  version: 1.2.1
-  resolution: "scryptsy@npm:1.2.1"
-  dependencies:
-    pbkdf2: "npm:^3.0.3"
-  checksum: ec053305f1da3067269b36ac59f4a76aeb0b3dad1b9dd1b5438a60c9c93da8d09e3886a4dd2395450441df401774c41192c73700931ba38c0f77c000a384a434
-  languageName: node
-  linkType: hard
-
 "scss-parser@npm:^1.0.4":
   version: 1.0.5
   resolution: "scss-parser@npm:1.0.5"
@@ -34276,7 +34249,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"uuid@npm:^3.3.2, uuid@npm:^3.3.3":
+"uuid@npm:^3.3.3":
   version: 3.4.0
   resolution: "uuid@npm:3.4.0"
   bin: