Successfully implementing DevSecOps isn't just about buying a tool; it requires a cultural and procedural shift. Here are the five core pillars you must master.

| Phase | Focus | Key Tools (Open Source) | |-------|-------|-------------------------| | | Secure code repos & pipelines | Gitleaks (secrets), OWASP Dependency-Check | | Phase 2: CI Integration | Static & software composition analysis | Semgrep, Trivy (fs scan) | | Phase 3: Pipeline Hardening | Immutable artifacts & image scanning | Kaniko, Cosign (signing) | | Phase 4: Runtime Defense | Policy enforcement & incident response | Falco, Open Policy Agent (Gatekeeper) |