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What is a man-in-the-middle-attack?
A man-in-the-middle (MitM) attack is a type of cyberattack in which communications between two parties is intercepted, often to steal login credentials or personal information, spy on victims, sabotage communications, or corrupt data.
“MitM attacks are attacks where the attacker is actually sitting between the victim and a legitimate host the victim is trying to connect to,” says Johannes Ullrich, dean of research at SANS Technology Institute. “So, they’re either passively listening in on the connection or they’re actually intercepting the connection, terminating it and setting up a new connection to the destination.”