Session Hijacking: Exploiting TCP, UDP and HTTP Sessions

Contributed by Shray Kapoor

Session hijacking can be done at two levels: Network Level and Application Level. Network layer hijacking involves TCP and UDP sessions, whereas Application level session hijack occurs with HTTP sessions. Successful attack on network level sessions will provide the attacker some critical information which will than be used to attack application level sessions, so most of the time they occur together depending on the system that is attacked. Network level attacks are most attractive to an attacker because they do not have to be customized on web application basis; they simply attack the data flow of the protocol, which is common for all web applications.

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