How does dependency checking work in DevSecOps?

Dependency checking in DevSecOps ensures that every library, package, and third-party component used in an application is continuously scanned for known vulnerabilities. Tools like OWASP Dependency-Check, Snyk, and GitHub Dependabot compare dependencies against public vulnerability databases (NVD, CVE lists) and flag outdated or risky versions. In a DevSecOps pipeline, this process runs automatically during code commits, builds, and deployments, ensuring issues are identified early. Teams can then patch, upgrade, or replace insecure components before they reach production. Strong dependency checking reduces supply-chain risks and strengthens overall software security, which is a core focus of DevSecOps Training for modern teams.