An effective trust based defense mechanism to thwart malicious attack in smart grid communication network

Abstract

Owing to the openness, smart grid communication network (SGCN) is vulnerable to several security attacks during data transmission. Providing effective security measures to improve network availability is a significant issue in SGCN, since network unavailability result in the loss of real-time monitoring of power infrastructures. The highly interconnected SGCN network is susceptible to packet dropping attacks between data aggregation points. In this paper, a probability based trust calculation method is proposed to thwart the malicious packet dropping attack. Trust evaluation is done using one-hop, multi-hop, hybrid and total trust to thwart malicious attacks. At each stage, suitable equations are provided to eliminate misbehaving attack, on-off attack and bad-mouthing attack. Simulations are conducted to determine the significant performance of the trust based network by changing the number of fraudulent nodes. The simulation result shows that the proposed probability based trust calculation model provides secured communication and reduces data loss in the network.