Abstract

Wireless sensor network (WSN) has various field of applications, but on the other hand it is at high level to the various security threats. These networks are easily leveled to security attacks, since once deployed these networks are unattended and unprotected. Some of the inbuilt features like limited battery and low memory makes sensor networks are infeasible to use predictable security solutions, which needs complex computations and high memory. There are number of attacks on wireless sensor networks similar to black hole attack, selective forwarding attacks, sink hole attack, Sybil attack etc. This paper present work on the wireless sensor network in the existence of black hole attackers using Ad-hoc on Demand Distance Vector Routing Protocol. The black hole type of attacker node absorbs every message passing through it. So the precious node attacks the whole traffic in the network.