The return of Shai-Hulud: How SonarQube detects and contains the npm worm

Shai-Hulud is a recurring self-propagating npm supply-chain worm that compromises maintainer accounts, inserts malicious code into package releases, executes during installation, steals credentials from developer and CI environments, and uses those credentials to infect further packages, including transitive dependencies. Newer variants can also establish persistence through configuration hooks for AI coding agents and VS Code, allowing malicious code to run when infected repositories are opened. The text describes SonarQube Advanced Security as a layered defense that identifies known malicious package versions through threat-intelligence-backed software composition analysis, marks them as blocker-severity risks, can fail CI quality gates, and rescans permanent branches daily to catch packages later identified as malicious. Additional protections include pre-commit dependency checks, dependency pre-flight checks for coding agents, and secret detection to limit credential exposure, while acknowledging that feed-based tools cannot detect a compromise immediately upon publication. Recommended incident response measures include stopping affected pipelines, removing persistence mechanisms before rotating credentials, auditing and reinstalling dependencies from verified lockfiles, enabling scanning and quality gates, reviewing agent configuration directories, and restricting npm install scripts to prevent malicious lifecycle hooks from executing.

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