A Hierarchical Intrusion Detection System in Wireless Sensor Networks
Wireless Sensor Networks (WSNs) often consist of tiny devices with limited energy, computational power, transmission range, and memory. WSNs offer a variety of potential means to monitor environments. However, WSNs are vulnerable to various attacks because these networks are often deployed in open and unprotected environments. Therefore, security design is an important aspect of WSNs. In this paper, the authors describe various threats to WSN and then examine existing approaches to identify these threats. Finally, they propose an intrusion detection mechanism based on these existing approaches to identifying threats.