Motion sensor
Also called: motion detector
Course: AP® Cybersecurity Shows up in: Unit 2: Securing Spaces
A detective control that alerts security to movement, best placed where traffic is unexpected and paired with cameras.
Appears in the course and exam description (CED): 2.4.A.32.4.B.22.4.C.2
Why it matters in Unit 2
In busy areas it causes false alarms that people start to ignore.
Example
A sensor in the server room triggers at 2 a.m., and the guard checks the camera.
Learn it properly, with a checkpoint 2.4 Detecting Physical Attacks