GitHub Actions workflows abused in 'GhostAction' campaign
🔒 GitGuardian disclosed a campaign called "GhostAction" that tampers with GitHub Actions workflows to harvest and exfiltrate secrets to attacker-controlled domains. Attackers modified workflow files to enumerate repository secrets, hard-code them into malicious workflows, and forward credentials such as container registry and cloud provider keys. The researchers say 3,325 secrets from 327 users across 817 repositories were stolen, and they published IoCs while urging maintainers to review workflows, rotate exposed credentials, and tighten Actions controls.
