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Man in the Middle Attack

Man in the Middle (MIM) attack

In a Man in the Middle (MIM) attack the hacker places eavesdropping equipment between the sending device and the receiving device. He intercepts the data, records it and possibly modifies it, then sends it on to the intended receiving device. The attack is especially successful if neither the sender nor the receiver are aware that their data has been compromised.

In a MIM attack the attacker might insert a fake router into the communication media. The fake router routes packets from the sender's IP address to his eavesdropping equipment. He then records the data and possibly modifies it. Then he routes the packets back to the communication media, making sure the "hop" caused by his fake router is not recorded and the source in the packets is the original senders IP address. The sender and receiver have no knowledge that their data has been intercepted.

The defense against MIM attacks is to use strong data encryption. Strong data encryption requires that the encryption key be verified by a trusted third party called a Certificate Authority (CA).

More Network Security Articles:
• The Role of Security Penetration Testers
• How to Tell if Someone is Lurking on Your Wireless Network
• NMAP (Network Mapper) Port Scanner
• How SSL (Secure Sockets Layer) Works
• How to Use the Open Source Intrusion Detection System SNORT
• What is a Password Hash and Salt?
• Cyber Security Tips for Small and Medium Business (SMB)
• How a Firewall Provides Network Security
• What is Network AAA (Authentication, Authorization, and Accounting)?
• Methods to Combat Distributed Denial of Service (DDoS) Attacks

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