This article details LinkedIn's efforts to upgrade its Static Application Security Testing (SAST) capabilities. It covers the challenges faced with legacy systems, the design principles guiding the modernization, and the implementation of a new GitHub Actions-based workflow to enhance security without disrupting developer productivity.

The article discusses the security considerations necessary for using GitHub Actions in CI/CD setups, emphasizing the importance of protecting workflows against potential threats from contributors with write access. It details various attack scenarios, including script injection vulnerabilities, and provides best practices for securing sensitive workflows and managing permissions effectively.