Describe tailgating and identify a common mitigation.

• A. Tailgating occurs when an unauthorized person follows an authorized user through a door; mitigate with mantraps, turnstiles, badge policies, and training.
• B. Tailgating occurs when an unauthorized person follows an authorized user through a door; mitigate by installing more cameras.
• C. Tailgating is when a door is left open during maintenance.
• D. Tailgating can be prevented by simply posting a sign.

Answer: (A)