The Certified Software Supply Chain Security Expert (CSSE) is a professional certification program that teaches organizations how to protect against supply chain attacks and assess/reduce software supply chain risks. The course covers securing modern software supply chains from code to cloud, implementing frameworks like NIST SSDF and SLSA, and defending code repositories, container registries, Kubernetes clusters, and cloud environments. The curriculum includes seven main chapters covering introduction to supply chain security, attacking and defending code/application supply chains, container supply chains, Kubernetes/cluster supply chains, and cloud supply chains. It also addresses common defenses against supply chain attacks and managing secure software supply chain programs. The certification provides hands-on training in deploying SBOM scanning, artifact signing, and CI/CD security. Students learn through browser-based lab access with self-paced learning and 24/7 instructor support. Prerequisites include basic Linux command knowledge, understanding of Git, CI/CD pipelines, containers, and cloud platforms, familiarity with OWASP Top 10 vulnerabilities, and optional scripting language experience in Python, Golang, or Ruby.