Which versions of discord-massban are malicious?

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

How do I remediate discord-massban if I installed it?

discord-massban 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 discord-massban — how do I know if it already compromised me?

If discord-massban 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 discord-massban part of a known attack campaign?

Yes — discord-massban is associated with the 2026-05-discord-ban 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 discord-massban across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for discord-massban (version 0.1.0).

Malicious package

discord-massbanPyPI

Advisory published May 31, 2026Updated May 31, 2026

discord-massban is a confirmed malicious PyPI package (MAL-2026-5099) 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 discord-massban (PyPI)

MAL-2026-5099

Immediate action

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

pip uninstall discord-massban

What this malware does

Package steals data from web browsers (credentials, credit cards, history, ...)

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

Campaign: 2026-05-discord-ban

Reasons (based on the campaign):

infostealer
exfiltration-browser-data
exfiltration-credentials

Malicious versions

1 flagged

0.1.0

Indicators of compromise (SHA-256)

1b535ff4283b14cd5d93b2e31a997d1c8abd7424e2aa48a993c19e5e7f6b2b3b

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for discord-massban (version 0.1.0).
If you installed it — respond
discord-massban 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 discord-massban 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. discord-massban 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

2026-05-discord-ban

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks discord-massban-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

All malware advisories How O3 detects malware Vulnerability database