GitHub · GitHub Blog
Disrupting supply chain attacks on npm and GitHub Actions
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In the past year, there’s been a pattern of supply chain attacks that target weaknesses in package repositories and CI/CD systems to quickly spread malware to hundreds of open source projects.
Key facts
- In the past year, there’s been a pattern of supply chain attacks that target weaknesses in package repositories and CI/CD systems to quickly spread malware to hundreds of open source projects
- Supply chain attacks chain together several weaknesses, and there is no single security capability that can stop them
- Addressing them takes a holistic approach, prioritizing the mitigations that break the most impactful links in the attack chain
- The attacks vary in how they spread across the software ecosystem
Summary
They've written a few times about their plans for hardening the supply chain: Their plan for a more secure npm supply chain in September 2025, Strengthening supply chain security: Preparing for the next malware campaign in December 2025, and What’s coming to their GitHub Actions 2026 security roadmap in March 2026. Supply chain attacks chain together several weaknesses, and there is no single security capability that can stop them. The attacks vary in how they spread across the software ecosystem. Attacks start by compromising a single project, often by directly compromising a maintainer’s account or by targeting the project’s actions workflows.