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Malicious package

certifijPyPI

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

MAL-2025-41633
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall certifij

Malicious versions

1 flagged
2022.12.7

Indicators of compromise (SHA-256)

500d02e39b709cc683a654dc665fbee8553bcbd352bee92b20562fec160b1ff2

Detection & response playbook

Malicious package
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for certifij (version 2022.12.7). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging certifij across your stack and pipelines.

  2. If you installed it — respond

    Remove certifij 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.

  3. Did it already run?

    If certifij was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks certifij before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. certifij on PyPI has been identified as a malicious package (version 2022.12.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-04124

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks certifij-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.

certifij (PyPI) malicious package — MAL-2025-41633 | O3 Security