Which versions of lightmock are malicious?

The following PyPI versions of lightmock are flagged malicious: 0.1.0. Treat any of these as compromised.

How do I remediate lightmock if I installed it?

lightmock 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 lightmock — how do I know if it already compromised me?

If lightmock 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 lightmock part of a known attack campaign?

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

Search your lockfiles and build artifacts for lightmock (version 0.1.0).

Malicious package

lightmockPyPI

Advisory published Mar 26, 2026Updated Mar 26, 2026

lightmock is a confirmed malicious PyPI package (MAL-2026-2233) that steals credentials and exfiltrates sensitive data (malicious version 0.1.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in lightmock (PyPI)

MAL-2026-2233

Immediate action

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

pip uninstall lightmock

What this malware does

Clone of a legitimate package. During import, heavily obfuscate code downloads next stages and finally exfiltrates sensitive data, including data from web browsers.

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

Campaign: 2026-03-lightmock

Reasons (based on the campaign):

clones-real-package
obfuscation
infostealer
exfiltration-browser-data
exfiltration-crypto
Downloads and executes a remote malicious script.

Malicious versions

1 flagged

0.1.0

Indicators of compromise (SHA-256)

a3c7924362f935b55a808e1ede8ffea2dbc96326b853dc00d7ede36c002ff63c

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for lightmock (version 0.1.0).
If you installed it — respond
lightmock 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 lightmock 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. lightmock on PyPI has been identified as a malicious package (version 0.1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-03-lightmock

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks lightmock-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

Explore

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