A review: Sybil attack detection techniques in WSN

A Wireless Sensor Network (WSN) is a wireless network consisting of small sensor nodes. Sensors are used to monitor physical or environmental conditions. WSNs are particularly used in military and civilian applications. As WSNs are generally deployed in an unattended area, they are prone to various types of attacks. One of the harmful attacks is Sybil attack in which a node illegitimately claims multiple identities. In this scenario, legitimate node shares data to the malicious node and the data are lost. So that it becomes necessary to secure the network from this type of attack. This paper aims to study, discuss and analyze the various techniques for detection of Sybil attack in Wireless Sensor Networks. Also various protocols affected by Sybil attack are studied and analyzed.