System Security Engineering (SSE) is an element of systems engineering that applies scientific and engineering principles to identify security vulnerabilities and minimize or contain risks associated with these vulnerabilities. Program Protection is the DoD’s integrating process for mitigating and managing risks to advanced technology and mission-critical system functionality from foreign collection, design vulnerability or supply chain exploit/insertion, battlefield loss, and unauthorized or inadvertent disclosure throughout the acquisition life cycle. The SSE process captures SSE analysis in the system requirements and design documents, and SSE verification in the test plans, procedures, and results documents. For more information on System Security Engineering as a design consideration, see DAG Chapter 4 section 4.3.18.24 [https://acc.dau.mil/dag4.3.18.24]. This sub-topic area contains information on System Security Engineering. Also see DAG Chapter 13 [https://acc.dau.mil/dag13] for more information on SSE and Program Protection in Defense acquisition.