Position Verification in Sensor Networks
Fabricated position claims have been regarded as a serious security threat to ad hoc networks and sensor networks.In this paper,we present a lightweight security scheme for verifying nodes' position claims in sensor networks,based on statistic analysis of signal strength distribution.First,we propose a technique to prevent malicious nodes from covering up for each other.We,then,propose a statistic algorithm to enhance the accuracy of position verification.The algorithms can detect potential position fabrications by observing the signal strength distribution of a suspect node over a period of time.Finally,we conduct simulations to explore the feasibility of our scheme.