Comparing the impact of black hole and gray hole attack on LEACH in WSN

Abstract

The deployment of Wireless Sensor Networks (WSN) in unattended environment has led to various security threats. This paper provides an overview of LEACH, the most popular clustered routing protocol of WSN and how LEACH can be compromised by Black hole and Gray Hole attacker. "High energy threshold " concept is used to simulate these attacks on NS-2. The performance of WSN under attack is thoroughly investigated, by applying it on various network parameters with various node densities. It is observed that the effect of the Black Hole attack is more on the network performance as compared to the Gray Hole attack. © 2013 The Authors. Published by Elsevier B.V.