Man in the Middle Attack
By Stephen Bucaro
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:
• How to Protect Your Business From a Cyber Attack
• Top Ways to Prevent Data Loss
• The Role of Security Penetration Testers
• What is Penetration Testing?
• Wireless Network Security
• Nessus Network Vulnerability Scanner
• Secure, Network Compliant BYOD (Bring Your Own Device) Solutions
• Cyber Security Tips for Small and Medium Business (SMB)
• What's the Difference Between Sniffing, Snooping, and Spoofing?
• How Snort's Stealth TCP Port Scanning Works
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