Attackers manipulate the sequence numbers or timestamps of the signals sent by the key fob. By "rolling back" these values, attackers can replay previous legitimate signals, deceiving the vehicle's security system and potentially gaining unauthorized access.

Relay Attack is an extension of the replay attack. Attackers relay the original signal and transmit signals between the vehicle and its key fob, deceiving the system into believing the key is in closer proximity, thereby enabling unauthorized access or ignition.