What is tailgating?
Tailgating, or piggybacking, is following an authorized person through a secure door or gate without badging in. Attackers rely on politeness: few people want to shut a door on someone carrying boxes or wearing a delivery uniform.
How it works
Once inside, an attacker can plug a device into the network, photograph screens or take equipment. Tailgating is often paired with a pretext, such as a contractor or a new hire who forgot their badge.
Defenses include turnstiles and mantraps, visible badges, visitor escort rules and permission for staff to challenge strangers politely.
Why it matters
Physical access often bypasses network defenses entirely. A culture where people feel able to ask “can I see your badge?” is the most practical control.
