Which versions of anthropickit are malicious?

The following PyPI versions of anthropickit are flagged malicious: 999.9.9. Treat any of these as compromised.

How do I remediate anthropickit if I installed it?

Remove anthropickit 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 network activity or persistence. Use O3 Security's dependency scanner to confirm the package and its artifacts are fully purged across your stack.

Is anthropickit part of a known attack campaign?

Yes — anthropickit is associated with the 2026-06-anthropickit campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

Can O3 Security detect anthropickit in my codebase?

Yes. O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, blocking anthropickit and packages like it before any post-install script runs.

Malicious package

anthropickitPyPI

Malicious code in anthropickit (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-5755

Immediate action

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

pip uninstall anthropickit

What this malware does

During installation, the package attempts to exfiltrate sensitive env variables and SSH keys.

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-06-anthropickit

Reasons (based on the campaign):

exfiltration-ssh-keys
exfiltration-env-variables

Malicious versions

1 flagged

999.9.9

Indicators of compromise (SHA-256)

ff4126bd465ae6de09a2eaa94a4fd2d7d385a5dae2c093372668d4b7ecb81633

Frequently asked questions

No. anthropickit on PyPI has been identified as a malicious package (version 999.9.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-06-anthropickit

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · reporter

Scan your dependencies

O3 Security blocks malicious packages like this at install time and in CI.

Supply-chain protection