ABSTRACT

Mobile Wireless sensor network (MWSN) is one of the recently emerging areas in which mobility of sensor nodes play a major role. Sensor nodes are allowed to move freely and are allowed to communicate with each other without a need for fixed infrastructure. Sensor nodes are not equipped with tamper resistant hardware which arises many security challenges. Some of threats are clone attack, Wormhole attack, Sybil attack etc. The attack concentrated in this paper is Clone attack. Here, adversary subverts the network by just introducing replicas of previously compromised nodes. We have some traditional approaches to detect cloned nodes in stationary sensor nodes. The mobility of sensor nodes increases the challenges faced while detecting clone attacks. Recent research work leads to design of many protocols to detect clone in MWSN with low storage overhead, low computation overhead and increased probability of detection. This paper studies various techniques for detection of clones in mobile and stationary environment. It also summarizes various parameters to evaluate the detection probability of techniques discussed.