False negative
Course: AP® Cybersecurity Shows up in: Unit 3: Securing Networks
When an adversary bypasses a detection system, so a real attack raises no alert.
Appears in the course and exam description (CED): 3.5.D.4
Why it matters in Unit 3
Signature-based systems are easier to bypass; missed attacks can cause loss, harm, disruption or destruction.
Example
A brand-new attack slips past a signature database that has never seen it.
Learn it properly, with a checkpoint 3.5 Detecting Network Attacks