Which versions of temp-development-package-test are malicious?

The following PyPI versions of temp-development-package-test are flagged malicious: 0.1, 0.2, 0.3, 0.4. Treat any of these as compromised.

How do I remediate temp-development-package-test if I installed it?

Remove temp-development-package-test 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 temp-development-package-test part of a known attack campaign?

Yes — temp-development-package-test is associated with the 2026-06-easyaillm 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 temp-development-package-test 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 temp-development-package-test and packages like it before any post-install script runs.

Malicious package

temp-development-package-testPyPI

Malicious code in temp-development-package-test (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-5876

Immediate action

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

pip uninstall temp-development-package-test

What this malware does

Starting with version 0.4, package installs a sitecustomize.py that executes during Python engine initialization. The embeded code uses mshta to download malicious code, as in other packages from the campaign.

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

Campaign: 2026-06-easyaillm

Reasons (based on the campaign):

Downloads and executes a remote executable.
obfuscation
malware

Malicious versions

4 flagged

0.10.20.30.4

Indicators of compromise (SHA-256)

e3c86f2cd8d50f754a3ad16c1daeda56d43f655d6025fa24c7fa91bcbdfd84dc

dcb57e25c8993eacafd70b6d4add3460419c7f2c7083ee50397700f1e1238d4c

Frequently asked questions

No. temp-development-package-test on PyPI has been identified as a malicious package (versions 0.1, 0.2, 0.3, 0.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-06-easyaillm

References

Credits

Kamil Mańkowski (kam193) · analyst

Scan your dependencies

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

Supply-chain protection