TLDR Tech / Practical
Secure GitHub Actions pipelines against threats by 2026
GitHub Actions has been targeted by supply chain attacks and token leaks due to weak default settings and vulnerabilities like pull_request_target and cache poisoning. To counter these issues, GitHub and the security community implemented enhanced protections starting in 2024 and continuing through 2026. These include stricter defaults, workflow execution rulesets, egress firewalls, and lock files. The author provides an overview of these past security events and recommends technical safeguards for developers and organizations to protect their CI/CD systems.
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