Date Added: Dec 2011
In multi-hop wireless ad hoc networks, cooperation between nodes to route each other's packets exposes these nodes to a wide range of security attacks. Also due to the vulnerability of the routing protocols, the wireless ad-hoc networks face several security risks. A particularly severe security attack that affects the ad hoc network routing protocols, is known as the wormhole attack. The wormhole attack is carried out as a two phase process launched by one or more than one malicious nodes. In these malicious nodes, called as wormhole nodes, try to lure legitimate nodes to send data via them by participating in the network.