Grafana and GitHub Breached: The Risk When Private Code Leaks

TeamPCP, a threat actor group, has breached private code repositories at GitHub, Grafana, and Mistral AI through a cascading supply chain attack that began with leaked credentials. The key risks highlighted are: private repos contain 6x more credentials than public ones, meaning stolen code may contain secrets enabling further compromise; and access to private codebases lowers the barrier for 0-day vulnerability discovery, especially with AI-assisted code analysis. Recommended mitigations include scanning private repos for secrets, applying least-privilege principles, containerization, network isolation, and deploying honeytokens for early breach detection.