Selective forwarding attack detection using watermark in WSNs

With the widely use of wireless sensor network (WSN), data forwarding security has become more and more important to the whole network. In order to avoid the selective forwarding attack, we proposed a scheme of secure data transmission which can forward the data safely, and detect the selective forwarding attack. In this paper, we judge the trust value of each node to select a secure path for message forwarding and then use the watermark technology to detect the malicious nodes which are suspected to launch selective forwarding attack. Different from the multi-path routing which only defends the selective forwarding attack, our method may find the malicious nodes. Extensive simulation proves that even when the channel error rate is 10%, the detection accuracy of the proposed scheme is over 95%.