With a increased area of the applications of WSN, the security mechanisms are rising issue of outmost concern. The most important challenges threatening the successful installation of sensor systems is its privacy. Many privacy-related issues has been addressed by security mechanisms, but one sensor network privacy issue that cannot be adequately addressed by network security is source-location privacy One important class of sensor-driven applications is to monitor a valuable resources. For instance, sensors will be deployed in places like natural habitats to monitor the activities of endangered animals, or may be used in military purposes. In these asset monitoring applications, it is important to provide security to the source sensor's location. In this paper, we had proposed security scheme for preserving source node location privacy. We had developed a model assuming that attacker can monitor traffic in small area instead of whole network. Finally, we proposed a deviated location and updated node identity based scheme for efficiently protecting source node from hotspot locating attack. The protection scheme has shown the better performance which is proved by simulation results. The protection scheme has recovered the network performance in presence of attacker and provides attack free environment.

Hotspot Locating Attack DREAM Hunter Node identity