A facility uses badge readers that log entry times to a central SIEM. An attacker tailgates an employee through a door without badging in. Which converged security control would BEST detect this anomaly?
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A
Comparing badge-in counts to video-based people counters at the same door
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B
Increasing badge reader sensitivity thresholds
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C
Deploying additional perimeter fencing around the building
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D
Requiring employees to change badge PINs monthly