A security manager implements a facial recognition system at the entrance to a data center. The system scans each individual's face and only unlocks the door for authorized personnel. Which of the following BEST describes this type of security control?
Detective
Preventive
Deterrent
Corrective
A facial recognition system used to grant or deny entry is a preventive control. Preventive controls are designed to stop a security incident from happening. In this scenario, the system actively prevents unauthorized individuals from accessing the data center. Deterrent controls aim to discourage attackers (e.g., a warning sign), detective controls identify incidents after they occur (e.g., a log review), and corrective controls limit the damage after an incident (e.g., restoring from a backup).
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