No PLTW dependency. Teach this first — before Unit 1 begins. Paper-based, discussion, and demo only. No virtual lab required. Introduces defense-in-depth as the organizing frame for the entire course.
AP-Only Lessons — Supplement A
Physical security and AI attacks are the two AP-only topics with no PLTW equivalent — and no dependency on anything else in the course. That makes them ideal week-one content. Students can walk into class, look at their own school building, and immediately identify tailgating risks.
Defense-in-depth (AP 2.1.G) is introduced in Lesson A.3 as the organizing frame for the entire course — named on week two, returned to all year.