Which of the following physical access controls often functions as both a preventive and detective...

Understanding Physical Access Controls:

Physical access controls protect assets by preventing unauthorized access and detecting potential security violations.

Controls can be preventive (stop incidents from occurring) or detective (identify incidents after they occur).

Why Surveillance Cameras Function as Both Preventive and Detective Controls:

Preventive: The presence of cameras discourages unauthorized access and malicious activities.

Detective: If an incident occurs, cameras provide recorded evidence for investigation and accountability.

Why Other Options Are Less Suitable:

A. Locked doors – Purely preventive, as they block unauthorized access but do not detect breaches.

B. Firewalls – Primarily an IT security measure, not a physical access control.

D. Login IDs and passwords – These are logical (IT) access controls, not physical controls.

IIA GTAG 15 – Auditing Privacy and Security Risks: Highlights the dual role of surveillance as a preventive and detective control.

IIA Standard 2120 – Risk Management: Encourages controls that both prevent and detect risks.

COSO’s Internal Control Framework: Supports security measures that serve multiple control functions.

Relevant IIA References:✅ Final Answer: Surveillance cameras (Option C).