Which of the following is an example of a 'Detective' control?

Answer options:

Firewall blocking traffic

Intrusion Detection System (IDS) alerts

Biometric door lock

Data encryption

How to approach this question

Preventive stops it. Detective sees it. Corrective fixes it.

Full Answer

B.Intrusion Detection System (IDS) alerts✓ Correct

An IDS monitors network traffic for suspicious activity and issues alerts. It detects the activity but typically does not block it (unlike an IPS or firewall), making it a detective control.

Common mistakes

Confusing IDS (Detective) with IPS (Preventive).

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