Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I was going over the internet reading about types of attacks on a computer system and I can not differentiate between MITM, Replay and TCP Session Hijacking.
They appear to be the same.
Sniff the data , change it , retransmit.
Please let me know if they are the same or different.

share|improve this question

closed as off topic by random Jul 24 '12 at 14:05

Questions on Super User are expected to relate to computer software or computer hardware within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

You might want to know about – Chris W. Rea Jul 24 '12 at 14:37
up vote 2 down vote accepted

Replay attacks and Session hijacking are two types of Man In The Middle attack. MITM is the set, the other two are subsets.

You can be a man in the middle doing an attack on VoIP, some kinds of cryptography, etc.

share|improve this answer
Replay attack: capture , change , send TCP Hijacking: capture , change , send. Where do they differ then?? – Fasih Khatib Jul 24 '12 at 13:10
Fasih, they differ in what you are attacking. TCP Session hijacking will ONLY hijack a TCP session. A replay attack can be used against TCP, cryptography, etc... A replay attack falls under the classification "Man In The Middle," just like a session hijack does. – Everett Jul 24 '12 at 13:14
OK so Replay can be retransmitting anything while TCP hijacking is ONLY retransmitting the TCP packets? – Fasih Khatib Jul 24 '12 at 13:16
That is correct. – Everett Jul 24 '12 at 13:24

Not the answer you're looking for? Browse other questions tagged or ask your own question.