diff --git a/packages/keyring-api/CHANGELOG.md b/packages/keyring-api/CHANGELOG.md
index fd7ed981e..fbb94573c 100644
--- a/packages/keyring-api/CHANGELOG.md
+++ b/packages/keyring-api/CHANGELOG.md
@@ -11,6 +11,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Add support for `base32` private key encoding in `exportAccount` ([#589](https://github.com/MetaMask/accounts/pull/589))
 
+### Changed
+
+- Use `sensitive` struct for `privateKey` in `PrivateKeyExportedAccountStruct` ([#577](https://github.com/MetaMask/accounts/pull/577))
+  - This ensures the private key value is always redacted in case of validation errors.
+- Bump `@metamask/superstruct` from `^3.3.0` to `^3.4.0` ([#577](https://github.com/MetaMask/accounts/pull/577))
+
 ## [23.5.0]
 
 ### Added
diff --git a/packages/keyring-api/package.json b/packages/keyring-api/package.json
index a5ef05625..bc5f4dab4 100644
--- a/packages/keyring-api/package.json
+++ b/packages/keyring-api/package.json
@@ -68,7 +68,7 @@
   },
   "dependencies": {
     "@metamask/keyring-utils": "^3.3.1",
-    "@metamask/superstruct": "^3.3.0",
+    "@metamask/superstruct": "^3.4.0",
     "@metamask/utils": "^11.11.0",
     "bitcoin-address-validation": "^2.2.3"
   },
diff --git a/packages/keyring-api/src/v2/api/export-account/private-key.test.ts b/packages/keyring-api/src/v2/api/export-account/private-key.test.ts
new file mode 100644
index 000000000..ad1c6f536
--- /dev/null
+++ b/packages/keyring-api/src/v2/api/export-account/private-key.test.ts
@@ -0,0 +1,62 @@
+import type { StructError } from '@metamask/superstruct';
+import { assert } from '@metamask/superstruct';
+
+import { PrivateKeyExportedAccountStruct } from './private-key';
+
+const SENSITIVE_REDACTED = '***';
+
+const RAW_PRIVATE_KEY =
+  '0xdeadbeef1234567890abcdef1234567890abcdef1234567890abcdef12345678';
+
+describe('PrivateKeyExportedAccountStruct', () => {
+  it('accepts a valid exported account', () => {
+    expect(() =>
+      assert(
+        {
+          type: 'private-key',
+          privateKey: RAW_PRIVATE_KEY,
+          encoding: 'hexadecimal',
+        },
+        PrivateKeyExportedAccountStruct,
+      ),
+    ).not.toThrow();
+  });
+
+  it('redacts the private key value from the error when `privateKey` is invalid', () => {
+    let error: StructError | undefined;
+    try {
+      assert(
+        { type: 'private-key', privateKey: 123, encoding: 'hexadecimal' },
+        PrivateKeyExportedAccountStruct,
+      );
+    } catch (caughtError) {
+      error = caughtError as StructError;
+    }
+    expect(error?.value).toBe(SENSITIVE_REDACTED);
+    expect(error?.message).toContain(SENSITIVE_REDACTED);
+    expect(error?.message).not.toContain('123');
+  });
+
+  it('redacts the private key from `branch` when a sibling field fails', () => {
+    let error: StructError | undefined;
+    try {
+      assert(
+        {
+          type: 'private-key',
+          privateKey: RAW_PRIVATE_KEY,
+          encoding: 'invalid-encoding',
+        },
+        PrivateKeyExportedAccountStruct,
+      );
+    } catch (caughtError) {
+      error = caughtError as StructError;
+    }
+    expect(error?.message).toContain('encoding');
+    const allBranchItems = (error?.failures() ?? []).flatMap(
+      (failure) => failure.branch,
+    );
+    expect(allBranchItems).not.toContainEqual(
+      expect.objectContaining({ privateKey: RAW_PRIVATE_KEY }),
+    );
+  });
+});
diff --git a/packages/keyring-api/src/v2/api/export-account/private-key.ts b/packages/keyring-api/src/v2/api/export-account/private-key.ts
index 566820c73..517e96570 100644
--- a/packages/keyring-api/src/v2/api/export-account/private-key.ts
+++ b/packages/keyring-api/src/v2/api/export-account/private-key.ts
@@ -1,4 +1,4 @@
-import { literal, object, string } from '@metamask/superstruct';
+import { object, sensitive, literal, string } from '@metamask/superstruct';
 import type { Infer } from '@metamask/superstruct';
 
 import { PrivateKeyEncodingStruct } from '../private-key';
@@ -14,7 +14,7 @@ export const PrivateKeyExportedAccountStruct = object({
   /**
    * The private key of the exported account.
    */
-  privateKey: string(),
+  privateKey: sensitive(string()),
   /**
    * The encoding of the exported private key.
    */
diff --git a/packages/keyring-eth-hd/CHANGELOG.md b/packages/keyring-eth-hd/CHANGELOG.md
index b1cb4d16b..5c65edb0c 100644
--- a/packages/keyring-eth-hd/CHANGELOG.md
+++ b/packages/keyring-eth-hd/CHANGELOG.md
@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Bump `@metamask/keyring-sdk` from `^2.0.2` to `^2.2.0` ([#544](https://github.com/MetaMask/accounts/pull/544), [#546](https://github.com/MetaMask/accounts/pull/546), [#562](https://github.com/MetaMask/accounts/pull/562))
 - Bump `@metamask/keyring-utils` from `^3.2.0` to `^3.3.1` ([#544](https://github.com/MetaMask/accounts/pull/544), [#546](https://github.com/MetaMask/accounts/pull/546))
 - Bump `@metamask/keyring-api` from `^23.1.0` to `^23.5.0` ([#562](https://github.com/MetaMask/accounts/pull/562), [#569](https://github.com/MetaMask/accounts/pull/569), [#583](https://github.com/MetaMask/accounts/pull/583), [#587](https://github.com/MetaMask/accounts/pull/587))
+- Bump `@metamask/superstruct` from `^3.3.0` to `^3.4.0` ([#577](https://github.com/MetaMask/accounts/pull/577))
 
 ## [14.1.1]
 
diff --git a/packages/keyring-eth-hd/package.json b/packages/keyring-eth-hd/package.json
index 761aac147..5b934efb6 100644
--- a/packages/keyring-eth-hd/package.json
+++ b/packages/keyring-eth-hd/package.json
@@ -74,7 +74,7 @@
     "@metamask/keyring-sdk": "^2.2.0",
     "@metamask/keyring-utils": "^3.3.1",
     "@metamask/scure-bip39": "^2.1.1",
-    "@metamask/superstruct": "^3.3.0",
+    "@metamask/superstruct": "^3.4.0",
     "@metamask/utils": "^11.11.0",
     "ethereum-cryptography": "^2.2.1"
   },
diff --git a/packages/keyring-eth-money/CHANGELOG.md b/packages/keyring-eth-money/CHANGELOG.md
index 2e43e85fe..c9a96bdfe 100644
--- a/packages/keyring-eth-money/CHANGELOG.md
+++ b/packages/keyring-eth-money/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Bump `@metamask/keyring-api` from `^23.1.0` to `^23.5.0` ([#562](https://github.com/MetaMask/accounts/pull/562), [#569](https://github.com/MetaMask/accounts/pull/569), [#583](https://github.com/MetaMask/accounts/pull/583), [#587](https://github.com/MetaMask/accounts/pull/587))
 - Bump `@metamask/keyring-sdk` from `^2.1.1` to `^2.2.0` ([#562](https://github.com/MetaMask/accounts/pull/562))
+- Bump `@metamask/superstruct` from `^3.3.0` to `^3.4.0` ([#577](https://github.com/MetaMask/accounts/pull/577))
 
 ## [3.0.0]
 
diff --git a/packages/keyring-eth-money/package.json b/packages/keyring-eth-money/package.json
index f71638ec5..db78510db 100644
--- a/packages/keyring-eth-money/package.json
+++ b/packages/keyring-eth-money/package.json
@@ -70,7 +70,7 @@
     "@metamask/keyring-api": "^23.5.0",
     "@metamask/keyring-sdk": "^2.2.0",
     "@metamask/keyring-utils": "^3.3.1",
-    "@metamask/superstruct": "^3.3.0",
+    "@metamask/superstruct": "^3.4.0",
     "async-mutex": "^0.5.0"
   },
   "devDependencies": {
diff --git a/packages/keyring-internal-api/CHANGELOG.md b/packages/keyring-internal-api/CHANGELOG.md
index ea4ff0eb7..8ec8c9f00 100644
--- a/packages/keyring-internal-api/CHANGELOG.md
+++ b/packages/keyring-internal-api/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Bump `@metamask/keyring-utils` from `^3.2.0` to `^3.3.1` ([#544](https://github.com/MetaMask/accounts/pull/544), [#546](https://github.com/MetaMask/accounts/pull/546))
 - Bump `@metamask/keyring-api` from `^23.1.0` to `^23.5.0` ([#562](https://github.com/MetaMask/accounts/pull/562), [#569](https://github.com/MetaMask/accounts/pull/569), [#583](https://github.com/MetaMask/accounts/pull/583), [#587](https://github.com/MetaMask/accounts/pull/587))
+- Bump `@metamask/superstruct` from `^3.3.0` to `^3.4.0` ([#577](https://github.com/MetaMask/accounts/pull/577))
 
 ## [11.0.1]
 
diff --git a/packages/keyring-internal-api/package.json b/packages/keyring-internal-api/package.json
index fda7bbd2d..d1758c278 100644
--- a/packages/keyring-internal-api/package.json
+++ b/packages/keyring-internal-api/package.json
@@ -57,7 +57,7 @@
   "dependencies": {
     "@metamask/keyring-api": "^23.5.0",
     "@metamask/keyring-utils": "^3.3.1",
-    "@metamask/superstruct": "^3.3.0"
+    "@metamask/superstruct": "^3.4.0"
   },
   "devDependencies": {
     "@lavamoat/allow-scripts": "^3.2.1",
diff --git a/packages/keyring-sdk/CHANGELOG.md b/packages/keyring-sdk/CHANGELOG.md
index db2ca5e13..c1c02ef98 100644
--- a/packages/keyring-sdk/CHANGELOG.md
+++ b/packages/keyring-sdk/CHANGELOG.md
@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Bump `@metamask/keyring-api` from `^23.2.0` to `^23.5.0` ([#569](https://github.com/MetaMask/accounts/pull/569), [#583](https://github.com/MetaMask/accounts/pull/583), [#587](https://github.com/MetaMask/accounts/pull/587))
+- Bump `@metamask/superstruct` from `^3.3.0` to `^3.4.0` ([#577](https://github.com/MetaMask/accounts/pull/577))
 
 ## [2.2.0]
 
diff --git a/packages/keyring-sdk/package.json b/packages/keyring-sdk/package.json
index 5f914e599..13ccd8bda 100644
--- a/packages/keyring-sdk/package.json
+++ b/packages/keyring-sdk/package.json
@@ -71,7 +71,7 @@
     "@metamask/keyring-api": "^23.5.0",
     "@metamask/keyring-utils": "^3.3.1",
     "@metamask/scure-bip39": "^2.1.1",
-    "@metamask/superstruct": "^3.3.0",
+    "@metamask/superstruct": "^3.4.0",
     "@metamask/utils": "^11.11.0",
     "async-mutex": "^0.5.0",
     "ethereum-cryptography": "^2.2.1",
diff --git a/packages/keyring-snap-bridge/CHANGELOG.md b/packages/keyring-snap-bridge/CHANGELOG.md
index a73486aea..a58fd1fce 100644
--- a/packages/keyring-snap-bridge/CHANGELOG.md
+++ b/packages/keyring-snap-bridge/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Bump `@metamask/superstruct` from `^3.3.0` to `^3.4.0` ([#577](https://github.com/MetaMask/accounts/pull/577))
+
 ## [23.0.1]
 
 ### Fixed
diff --git a/packages/keyring-snap-bridge/package.json b/packages/keyring-snap-bridge/package.json
index 2ad6b42b3..a070d9dfa 100644
--- a/packages/keyring-snap-bridge/package.json
+++ b/packages/keyring-snap-bridge/package.json
@@ -78,7 +78,7 @@
     "@metamask/snaps-controllers": "^19.0.1",
     "@metamask/snaps-sdk": "^11.0.0",
     "@metamask/snaps-utils": "^12.2.1",
-    "@metamask/superstruct": "^3.3.0",
+    "@metamask/superstruct": "^3.4.0",
     "@metamask/utils": "^11.11.0",
     "@types/uuid": "^9.0.8",
     "async-mutex": "^0.5.0",
diff --git a/packages/keyring-snap-client/CHANGELOG.md b/packages/keyring-snap-client/CHANGELOG.md
index fb1ac9de2..1639df06e 100644
--- a/packages/keyring-snap-client/CHANGELOG.md
+++ b/packages/keyring-snap-client/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Bump `@metamask/superstruct` from `^3.3.0` to `^3.4.0` ([#577](https://github.com/MetaMask/accounts/pull/577))
+
 ## [9.2.0]
 
 ### Added
diff --git a/packages/keyring-snap-client/package.json b/packages/keyring-snap-client/package.json
index 50bd4f13e..9d8a9e690 100644
--- a/packages/keyring-snap-client/package.json
+++ b/packages/keyring-snap-client/package.json
@@ -68,7 +68,7 @@
   "dependencies": {
     "@metamask/keyring-api": "^23.5.0",
     "@metamask/keyring-utils": "^3.3.1",
-    "@metamask/superstruct": "^3.3.0",
+    "@metamask/superstruct": "^3.4.0",
     "@types/uuid": "^9.0.8",
     "uuid": "^9.0.1",
     "webextension-polyfill": "^0.12.0"
diff --git a/packages/keyring-snap-sdk/CHANGELOG.md b/packages/keyring-snap-sdk/CHANGELOG.md
index 9868a3de9..0c03c9a73 100644
--- a/packages/keyring-snap-sdk/CHANGELOG.md
+++ b/packages/keyring-snap-sdk/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Bump `@metamask/superstruct` from `^3.3.0` to `^3.4.0` ([#577](https://github.com/MetaMask/accounts/pull/577))
+
 ## [9.2.0]
 
 ### Added
diff --git a/packages/keyring-snap-sdk/package.json b/packages/keyring-snap-sdk/package.json
index 5b2a1d8a3..93d999a50 100644
--- a/packages/keyring-snap-sdk/package.json
+++ b/packages/keyring-snap-sdk/package.json
@@ -68,7 +68,7 @@
   "dependencies": {
     "@metamask/keyring-utils": "^3.3.1",
     "@metamask/snaps-sdk": "^11.0.0",
-    "@metamask/superstruct": "^3.3.0",
+    "@metamask/superstruct": "^3.4.0",
     "@metamask/utils": "^11.11.0",
     "webextension-polyfill": "^0.12.0"
   },
diff --git a/packages/keyring-utils/CHANGELOG.md b/packages/keyring-utils/CHANGELOG.md
index 66269dfd8..967f3be8d 100644
--- a/packages/keyring-utils/CHANGELOG.md
+++ b/packages/keyring-utils/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Bump `@metamask/superstruct` from `^3.3.0` to `^3.4.0` ([#577](https://github.com/MetaMask/accounts/pull/577))
+
 ### Removed
 
 - **BREAKING:** Removed `object`, `type` and `exactOptional` superstruct support ([#580](https://github.com/MetaMask/accounts/pull/580))
diff --git a/packages/keyring-utils/package.json b/packages/keyring-utils/package.json
index c8e01cdf4..2a2bc7a3f 100644
--- a/packages/keyring-utils/package.json
+++ b/packages/keyring-utils/package.json
@@ -56,7 +56,7 @@
   },
   "dependencies": {
     "@ethereumjs/tx": "^5.4.0",
-    "@metamask/superstruct": "^3.3.0",
+    "@metamask/superstruct": "^3.4.0",
     "@metamask/utils": "^11.11.0",
     "bitcoin-address-validation": "^2.2.3"
   },
diff --git a/yarn.lock b/yarn.lock
index ea6615f70..cb60bb4f4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1905,7 +1905,7 @@ __metadata:
     "@metamask/keyring-utils": "npm:^3.3.1"
     "@metamask/old-hd-keyring": "npm:@metamask/eth-hd-keyring@^4.0.1"
     "@metamask/scure-bip39": "npm:^2.1.1"
-    "@metamask/superstruct": "npm:^3.3.0"
+    "@metamask/superstruct": "npm:^3.4.0"
     "@metamask/utils": "npm:^11.11.0"
     "@ts-bridge/cli": "npm:^0.6.3"
     "@types/jest": "npm:^29.5.12"
@@ -1976,7 +1976,7 @@ __metadata:
     "@metamask/keyring-api": "npm:^23.5.0"
     "@metamask/keyring-sdk": "npm:^2.2.0"
     "@metamask/keyring-utils": "npm:^3.3.1"
-    "@metamask/superstruct": "npm:^3.3.0"
+    "@metamask/superstruct": "npm:^3.4.0"
     "@metamask/utils": "npm:^11.11.0"
     "@ts-bridge/cli": "npm:^0.6.3"
     "@types/jest": "npm:^29.5.12"
@@ -2111,7 +2111,7 @@ __metadata:
     "@metamask/snaps-controllers": "npm:^19.0.1"
     "@metamask/snaps-sdk": "npm:^11.0.0"
     "@metamask/snaps-utils": "npm:^12.2.1"
-    "@metamask/superstruct": "npm:^3.3.0"
+    "@metamask/superstruct": "npm:^3.4.0"
     "@metamask/utils": "npm:^11.11.0"
     "@ts-bridge/cli": "npm:^0.6.3"
     "@types/jest": "npm:^29.5.12"
@@ -2258,7 +2258,7 @@ __metadata:
     "@lavamoat/preinstall-always-fail": "npm:^2.1.0"
     "@metamask/auto-changelog": "npm:^6.1.0"
     "@metamask/keyring-utils": "npm:^3.3.1"
-    "@metamask/superstruct": "npm:^3.3.0"
+    "@metamask/superstruct": "npm:^3.4.0"
     "@metamask/utils": "npm:^11.11.0"
     "@ts-bridge/cli": "npm:^0.6.3"
     "@types/jest": "npm:^29.5.12"
@@ -2286,7 +2286,7 @@ __metadata:
     "@metamask/auto-changelog": "npm:^6.1.0"
     "@metamask/keyring-api": "npm:^23.5.0"
     "@metamask/keyring-utils": "npm:^3.3.1"
-    "@metamask/superstruct": "npm:^3.3.0"
+    "@metamask/superstruct": "npm:^3.4.0"
     "@ts-bridge/cli": "npm:^0.6.3"
     "@types/jest": "npm:^29.5.12"
     "@types/node": "npm:^20.12.12"
@@ -2347,7 +2347,7 @@ __metadata:
     "@metamask/keyring-api": "npm:^23.5.0"
     "@metamask/keyring-utils": "npm:^3.3.1"
     "@metamask/scure-bip39": "npm:^2.1.1"
-    "@metamask/superstruct": "npm:^3.3.0"
+    "@metamask/superstruct": "npm:^3.4.0"
     "@metamask/utils": "npm:^11.11.0"
     "@ts-bridge/cli": "npm:^0.6.3"
     "@types/jest": "npm:^29.5.12"
@@ -2379,7 +2379,7 @@ __metadata:
     "@metamask/keyring-api": "npm:^23.5.0"
     "@metamask/keyring-utils": "npm:^3.3.1"
     "@metamask/providers": "npm:^19.0.0"
-    "@metamask/superstruct": "npm:^3.3.0"
+    "@metamask/superstruct": "npm:^3.4.0"
     "@metamask/utils": "npm:^11.11.0"
     "@ts-bridge/cli": "npm:^0.6.3"
     "@types/jest": "npm:^29.5.12"
@@ -2413,7 +2413,7 @@ __metadata:
     "@metamask/keyring-utils": "npm:^3.3.1"
     "@metamask/providers": "npm:^19.0.0"
     "@metamask/snaps-sdk": "npm:^11.0.0"
-    "@metamask/superstruct": "npm:^3.3.0"
+    "@metamask/superstruct": "npm:^3.4.0"
     "@metamask/utils": "npm:^11.11.0"
     "@ts-bridge/cli": "npm:^0.6.3"
     "@types/jest": "npm:^29.5.12"
@@ -2443,7 +2443,7 @@ __metadata:
     "@lavamoat/allow-scripts": "npm:^3.2.1"
     "@lavamoat/preinstall-always-fail": "npm:^2.1.0"
     "@metamask/auto-changelog": "npm:^6.1.0"
-    "@metamask/superstruct": "npm:^3.3.0"
+    "@metamask/superstruct": "npm:^3.4.0"
     "@metamask/utils": "npm:^11.11.0"
     "@ts-bridge/cli": "npm:^0.6.3"
     "@types/jest": "npm:^29.5.12"
@@ -2770,10 +2770,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@metamask/superstruct@npm:^3.1.0, @metamask/superstruct@npm:^3.2.1, @metamask/superstruct@npm:^3.3.0":
-  version: 3.3.0
-  resolution: "@metamask/superstruct@npm:3.3.0"
-  checksum: 10/664d5e330484a86420bc004b1c7f8301e1501cce712f611fe657176b2979edbd7cc6f4c77c8b1610486a685ebbd0b72dacf4bd6cf143d6b52038069d2f4e84ab
+"@metamask/superstruct@npm:^3.1.0, @metamask/superstruct@npm:^3.2.1, @metamask/superstruct@npm:^3.4.0":
+  version: 3.4.0
+  resolution: "@metamask/superstruct@npm:3.4.0"
+  checksum: 10/915a6c10019631855368c75c4295a48ece7891cd6e1ab67ed65070142ef24ab019b12d6a71aff7a747a7d5273f64f61fcc42cded4def5d7519ed8441f12884a0
   languageName: node
   linkType: hard