Reviewing the impact of wormhole attack in MANET

Security of different networks has always been a primary concern as its necessary to protect the resources being shared and communication being done among the legitimate users. If we let down our safeguards, an attacker can transform the routing protocol and interrupt the network operations through mechanisms such as packet drops, flooding, data fabrication etc. MANET is a type of network whose dynamic topology, decentralizing governance and other such features are always in favour of many security attacks. This paper presents detail study of wormhole attack, algorithms to detect them that has been proposed so far and also directs the reader toward the areas that can be explored and work upon in future.