Which versions of certifo are malicious?

The following PyPI versions of certifo are flagged malicious: 2022.12.7. Treat any of these as compromised.

How do I remediate certifo if I installed it?

Remove certifo 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 certifo — how do I know if it already compromised me?

If certifo 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 certifo part of a known attack campaign?

Yes — certifo is associated with the RLMA-2025-04127 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 certifo across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for certifo (version 2022.12.7).

Malicious package

certifoPyPI

certifo is a confirmed malicious PyPI package (MAL-2025-41636) that executes malicious code on install (malicious version 2022.12.7). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in certifo (PyPI)

MAL-2025-41636

Immediate action

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

pip uninstall certifo

Malicious versions

1 flagged

2022.12.7

Indicators of compromise (SHA-256)

7aa9c59860737433fe87d6d4c75161022c7ce92a56f4b2525554d8fd6e7ae25b

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for certifo (version 2022.12.7).
If you installed it — respond
Remove certifo 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 certifo 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. certifo 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-2025-04127

Credits

ReversingLabs · finder

Detect & block this

O3 blocks certifo-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

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