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Malicious package

buildkite-test-collector-jest-examplenpm

Malicious code in buildkite-test-collector-jest-example (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-2733
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall buildkite-test-collector-jest-example

What this malware does

The package buildkite-test-collector-jest-example was found to contain malicious code.

Malicious versions

2 flagged
99.99.999.99.10

Indicators of compromise (SHA-256)

a4d8a83757f178218251d1766f26369bc207eca04a48d4decd6d3deaa218ca7d
b6fa2618170566c342534726ad9c855cf62ad98ee9b6e815e5324c5bc4779da2

Detection & response playbook

Malicious package
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for buildkite-test-collector-jest-example (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging buildkite-test-collector-jest-example across your stack and pipelines.

  2. If you installed it — respond

    Remove buildkite-test-collector-jest-example 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.

  3. Did it already run?

    If buildkite-test-collector-jest-example 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.

  4. How O3 protects you

    O3 blocks buildkite-test-collector-jest-example 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. buildkite-test-collector-jest-example on npm has been identified as a malicious package (versions 99.99.9, 99.99.10 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01899

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks buildkite-test-collector-jest-example-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.

buildkite-test-collector-jest-example (npm) malicious package — MAL-2026-2733 | O3 Security