An organization has implemented a security guard at the entrance to its data center to verify identity badges before allowing entrance. Which type of security control does this represent?
This security control is preventive because the security guard verifies identity badges to actively prevent unauthorized access to the data center. While the presence of a security guard may also act as a deterrent by discouraging potential intruders, the essential function here is to stop unauthorized entry, which characterizes a preventive control. Detective controls would identify unauthorized access after it happens, and corrective controls focus on restoring systems after an incident.
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