The applications of wireless sensor network (WSN) ranges from Area monitoring, Healthcare monitoring and Environmental sensing to the impervious applications like structural health monitoring and ocean monitoring systems. Due to this proliferated use and open nature of WSN, security issues have become a prime concern. Most of the attacks aim on energy deprivation, as energy is one of the major resource constraints in WSN. Trust based systems enhance network security. By incorporating Trust with Localization, our proposed system aims to thwart various types of attacks including replicated node attack which focuses on energy destitution. It is observed that the existing methods Light weight detection systems and the Trust aware systems incur lesser probability of detection rates in comparison with the proposed Trust based Localization Technique (TBLT). TBLT is a distributed technique but incurs overhead. But it can be considered as a tradeoff against the predication rate and throughput. The simulations are performed in NS2 and results are analyzed.
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