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Wireless ad hoc network is a collection of wireless mobile nodes that dynamically self-organize in arbitrary and temporary network topologies. As compared to conventional network, wireless ad hoc network are more vulnerable to the security attacks. The nature and structure of wireless ad hoc network makes it very attractive to attackers, because there is no fixed infrastructure and administrative approach in it. "Sinkhole attack" is one of the severe attacks in this type of network; this makes trustable nodes to malicious nodes that result in loss of secure information.
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