Man-in-the-Middle Attack (MITM)

A man-in-the-middle attack (MITM attack) is a broad name for a cyberattack in which the attacker inserts himself into a discussion between two parties in order to covertly listen in, intercept the communication, or alter communications between the two. It appears as though a typical information exchange is taking place since the two parties, who feel they are speaking to one another directly, are speaking to or sharing information with a third party.

All pertinent communications being sent between the two victims must be intercepted by the offender, who must then introduce fresh messages.