Replay attack

A replay attack (also known as a repeat attack or playback attack) is a form of network[1] attack in which valid data transmission is maliciously or fraudulently repeated or delayed.[1] This is carried out either by the originator or by an adversary who intercepts the data and re-transmits it, possibly as part of a spoofing attack by IP packet substitution. This is one of the lower-tier versions of a man-in-the-middle attack. Replay attacks are usually passive in nature.

Another way of describing such an attack is: "an attack on a security protocol using a replay of messages from a different context into the intended (or original and expected) context, thereby fooling the honest participant(s) into thinking they have successfully completed the protocol run."[2]

  1. ^ a b El Abbadi, Reda; Jamouli, Hicham (2021-01-25). Moreno-Valenzuela, Javier (ed.). "Takagi–Sugeno Fuzzy Control for a Nonlinear Networked System Exposed to a Replay Attack". Mathematical Problems in Engineering. 2021: 1–13. doi:10.1155/2021/6618105. ISSN 1563-5147.
  2. ^ Malladi, Sreekanth. "On Preventing Replay Attacks on Security Protocols" (PDF). oai.dtic.mil. Archived (PDF) from the original on January 20, 2022.