Act
archived
SleeperGem: Three Malicious RubyGems Target Developer Machines
- Engineer — Act: If you have Ruby projects, audit all dependency trees for git_credential_manager versions 2.8.0–2.8.3 and Dendreo versions 1.1.3–1.1.4; remove immediately and treat any developer machine that installed them since July 18 as potentially compromised.
- SOC/IR — Act: Hunt for installations of these specific gem versions in developer endpoint EDR telemetry and CI/CD build logs since July 18, 2026; any confirmed install warrants an assume-breach sweep of that machine for secondary payload execution.
- Leader — Plan: If your organization has Ruby developers, direct the engineering team to audit for these packages and assess developer workstation exposure this week — credential-stealing supply chain hits on dev machines can pivot to production secrets.
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