Man-in-the-middle attack

Patent Pending In cryptography and computer security, the man-in-the-middle attack (often abbreviated to MITM, MitM, MIM, MiM or MITMA) requires an attacker to have the ability to both monitor and alter or inject messages into a communication channel. One example is active eavesdropping, in which the attacker makes independent connections with the victims and relays messages between them to make them believe they are talking directly to each other over a private connection, when in fact the entire conversation is controlled by the attacker.