Which versions of anistream are malicious?

The following PyPI versions of anistream are flagged malicious: 0.0.1, 0.0.2, 0.0.3, 0.0.4. Treat any of these as compromised.

How do I remediate anistream if I installed it?

anistream is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed anistream — how do I know if it already compromised me?

If anistream 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.

Is anistream part of a known attack campaign?

Yes — anistream is associated with the 2026-03-anistream 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 anistream across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for anistream (4 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging anistream across your stack and pipelines.

Malicious package

anistreamPyPI

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

MAL-2026-1499

Immediate action

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

pip uninstall anistream

What this malware does

Package hides code that downloads and runs malware, likely an infostealer. The code is not directly called in the package suggesting it's a dependency or next stage in the infection chain.

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

Campaign: 2026-03-anistream

Reasons (based on the campaign):

Downloads and executes a remote executable.
infostealer
malware

Malicious versions

4 flagged

0.0.10.0.20.0.30.0.4

Indicators of compromise (SHA-256)

57e4902ca2172a78b93acf6ec1413ab098e72c158dc1ab74c3a84f28f50382f1

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for anistream (4 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging anistream across your stack and pipelines.
If you installed it — respond
anistream is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If anistream 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.
How O3 protects you
O3 blocks anistream 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. anistream on PyPI has been identified as a malicious package (versions 0.0.1, 0.0.2, 0.0.3, 0.0.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-03-anistream

References

Credits

Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks anistream-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring