Detecting compromised sensor node with subjective logic in wireless sensor network

To detect anomaly sensing data, in some existing methods, a sensor node first checks its sensing data. Only the node finds its data may be anomalous, it turns to other nodes for further detection. This reduces the energy consume, but it introduces the risk of cheat. Since sensor nodes are often physically captured, a compromised sensor node is able to stop checking its data. To cover it, in this paper, we propose the method that every neighbor node checks directly the node's sensing data and sink node fuses all neighbor node's detection to obtain the final conclusion. More importantly, neighbor node's detection is quantified as subjective logic opinion, and these opinions are fused with fusing operator of subjective logic. When only few nodes are compromised, our solution is capable of exposing compromised node.