Which versions of typescript-mock-data are malicious?

The following npm versions of typescript-mock-data are flagged malicious: 5.1.0. Treat any of these as compromised.

How do I remediate typescript-mock-data if I installed it?

Remove typescript-mock-data from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed typescript-mock-data — how do I know if it already compromised me?

If typescript-mock-data was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is typescript-mock-data part of a known attack campaign?

Yes — typescript-mock-data is associated with the RLMA-2026-01827 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find typescript-mock-data across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for typescript-mock-data (version 5.1.0).

Malicious package

typescript-mock-datanpm

Advisory published Mar 24, 2026Updated Apr 7, 2026

typescript-mock-data is a confirmed malicious npm package (MAL-2026-2394) that executes malicious code on install (malicious version 5.1.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in typescript-mock-data (npm)

MAL-2026-2394

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall typescript-mock-data

What this malware does

The package typescript-mock-data was found to contain malicious code.

Malicious versions

1 flagged

5.1.0

Indicators of compromise (SHA-256)

7f6402934d928721231772411f73cc8f386128c02a82c9990ddaace34fc808f3

d1a51f9143ac378f3ef81840f6858a902bd37449fa9b93b0999e021321ddafac

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for typescript-mock-data (version 5.1.0).
If you installed it — respond
Remove typescript-mock-data from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If typescript-mock-data was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. typescript-mock-data on npm has been identified as a malicious package (version 5.1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01827

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks typescript-mock-data-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database