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Malicious package

@atlaskit-internal_.smart-card/hover-cardnpm

@atlaskit-internal_.smart-card/hover-card is a confirmed malicious npm package (MAL-2026-10870) that executes malicious code on install (malicious version 99.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @atlaskit-internal_.smart-card/hover-card (npm)

MAL-2026-10870
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @atlaskit-internal_.smart-card/hover-card

Malicious versions

1 flagged
99.0.0

Indicators of compromise (SHA-256)

39a49f2e2132acbd350cfd1a31f5299ebeb43a80b5fb4e25638d8c664dc88845
8850ed85c3150acc7847e44a995f8d30f308f2ec81f547f7dff5f8b4ba925342

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 @atlaskit-internal_.smart-card/hover-card (version 99.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @atlaskit-internal_.smart-card/hover-card across your stack and pipelines.

  2. If you installed it — respond

    Remove @atlaskit-internal_.smart-card/hover-card 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 @atlaskit-internal_.smart-card/hover-card 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 @atlaskit-internal_.smart-card/hover-card 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. @atlaskit-internal_.smart-card/hover-card on npm has been identified as a malicious package (version 99.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-05400RLUA-2026-05822

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks @atlaskit-internal_.smart-card/hover-card-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.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database
@atlaskit-internal_.smart-card/hover-card (npm) malicious package — MAL-2026-10870 | O3 Security