Explore the concept of DoD-level security and its applicability in real-world scenarios through this BSides Nashville 2017 conference talk. Delve into the speaker's career journey starting from 1984, including experiences at the Naval Surface Weapons Center. Examine the basic risk equation, risk parameters, and reasons why DoD-level security may not be effective in all contexts. Investigate factors contributing to network insecurity, the risk-based security model, and the importance of data valuation. Learn about security-in-depth strategies, building a security culture, and the components of the security lifecycle. Gain insights into information security components and receive parting thoughts on the subject.