Editing Replay attack (section)

===Remote keyless-entry system for vehicles===
Many vehicles on the road use a [[remote keyless system]], or key fob, for the convenience of the user. Modern systems are hardened against simple replay attacks but are vulnerable to buffered replay attacks. This attack is performed by placing a device that can receive and transmit [[Radio wave|radio waves]] within range of the target vehicle. The transmitter will attempt to jam any RF vehicle unlock signal while receiving it and placing it in a buffer for later use. Upon further attempts to unlock the vehicle, the transmitter will jam the new signal, buffer it, and playback an old one, creating a rolling buffer that is one step ahead of the vehicle. At a later time, the attacker may use this buffered code to unlock the vehicle.<ref>{{cite journal|last1=Beek|first1=S. van de|last2=Leferink|first2=F.|title=Vulnerability of Remote Keyless-Entry Systems Against Pulsed Electromagnetic Interference and Possible Improvements|journal=IEEE Transactions on Electromagnetic Compatibility|volume=58|issue=4|pages=1259–1265|doi=10.1109/TEMC.2016.2570303|date=1 August 2016|s2cid=39429975|url=https://research.utwente.nl/en/publications/71214bed-b914-4937-8092-9271b64cc7d4 }}</ref><ref>{{cite web|last1=Francillon|first1=Aurelien|title=Attacks on Passive Keyless Entry and Start Systems in Modern Cars|url=https://eprint.iacr.org/2010/332.pdf|website=eprint.iacr.org/|access-date=8 December 2016}}</ref>