During a physical penetration test, evidence shows that an unauthorized visitor simply followed an employee through a badged doorway without presenting credentials. Which control would most effectively counter that specific infiltration technique?
Use sturdier doors connected to an alarm
Provide guidance to staff to confirm each person uses credentials
Training personnel to verify that each individual uses valid credentials when passing through a secured entry helps prevent unauthorized persons from entering behind an authorized user. Cameras and alarms monitor suspicious activity, but may not stop the act in real time. Fencing improves perimeter security, but does not address a person following another at a doorway. Heavier doors alone will not prevent close trailing.
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What is 'tailgating' in security terms?
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Why is training personnel effective in preventing tailgating?
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How does tailgating differ from piggybacking in security?