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Malicious package

micro-safe-toolRubyGems

Advisory published Updated

micro-safe-tool is a confirmed malicious RubyGems package (MAL-2026-15735) that executes malicious code on install (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in micro-safe-tool (RubyGems)

MAL-2026-15735
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall micro-safe-tool

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

42ee156db1c37cd8eea06ad66d88863532b896113ec622ebe423baed3bc880a6

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for micro-safe-tool (version 0.0.1).

  2. If you installed it — respond

    Remove micro-safe-tool 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 micro-safe-tool 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. micro-safe-tool on RubyGems has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-05701

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks micro-safe-tool-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.

Explore

micro-safe-tool (RubyGems) malicious package — MAL-2026-15735 | O3 Security