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Piggybacking on Internet access is the practice of establishing a wireless Internet connection by using another subscriber's wireless Internet access service without the subscriber's explicit permission or knowledge.
It is also a term for when an authorized person intentionally lets an unauthorized person in through an entrance to a restricted area. The attacker may be carrying something so that the person being piggybacked, will hold the door for the attacker. This differs from tailgaiting as tailgating would be following someone through a door by grapping the door just before it closes meaning the victim is not intentionally letting in the attacker..
It is also a term for when an authorized person intentionally lets an unauthorized person in through an entrance to a restricted area. The attacker may be carrying something so that the person being piggybacked, will hold the door for the attacker. This differs from tailgaiting as tailgating would be following someone through a door by grapping the door just before it closes meaning the victim is not intentionally letting in the attacker..