What is 'tailgating' (or 'piggybacking') in the context of data center physical security, and how is it mitigated?
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A
Tailgating is when an unauthorized person follows an authorized person through a secured door without presenting their own credentials; mitigated by mantraps, turnstiles, security awareness training, and access portal systems
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B
Tailgating is an attack where a vehicle follows a data center delivery truck to gain access to a secure loading dock; mitigated by anti-vehicle barriers and guard verification
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C
Tailgating is the practice of using another employee's access card while they are not present; mitigated by biometric authentication
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D
Tailgating refers to unauthorized access to rooftop equipment by climbing the building exterior; mitigated by security cameras and motion sensors