Abstract: Wireless Sensor Networks (WSN) is a trending technology now-a-days and has a wide range of applications such as battlefield surveillance, traffic surveillance, forest fire detection, flood detection etc. But wireless sensor networks are susceptible to a variety of potential attacks which obstructs the normal operation of the network. Black hole attack is one of severe security threat that affects the network from its normal functioning by maliciously advertising itself having shortest route to the destination and then drops all receiving packets. There are lots of mechanisms have been proposed to defend network from black hole attack, but none of the solution looks most promising to defend against black hole attack. So in this paper, we have surveyed and compared the existing solutions to black hole attacks on AODV protocol. Tabular representation of comparison depicts clear picture of these solutions.

Keywords: AODV, Black hole attack, IDS, Routing