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Commonly confused · Security Fundamentals & Crypto

Tailgating vs Piggybacking: What's the Difference?

Both involve an unauthorized person following an authorized person through a secured entrance. In tailgating the authorized person is unaware, while in piggybacking the authorized person knowingly lets them in, often out of courtesy or deception.

Tailgating

Full definition
vs

Piggybacking

Full definition
TailgatingPiggybacking
Authorized person aware?NoYes
ConsentNoneGiven, often tricked
ExampleSlipping through a closing door behind an employeeEmployee holds the door for someone carrying boxes
Main controlMantrap/access control vestibule, turnstilesTraining, policy, guards
DetectionDoor sensors, anti-passback, CCTVGuards and awareness culture
Remember it

Tailgaters sneak; piggybackers get a ride.

Exam tip

Many exams treat the terms as near synonyms, but when they distinguish, consent is the deciding factor. The textbook control for both is an access control vestibule (mantrap).

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