Secure data aggregation and intrusion detection in wireless sensor networks

Data Aggregation (DA) is a technique of data gathering in Wireless Sensor Networks (WSNs). It provide advantages such as reporting consolidated data, reducing data redundancy, improving network lifetime etc. However, deploying WSNs in hostile and remote environments presents security vulnerabilities that can lead to various security attacks such as energy based attacks, attacks on data aggregation etc. Numerous secure DA techniques have been proposed in the literature. However, lightweight models using Trust Monitoring System (TMS) and Intrusion Detection Systems (IDS) are limited. This paper presents a secure data aggregation framework for Wireless Sensor Networks (WSNs) using TMS at node level and IDS at Base Station (BS) side. Each node in the network assesses the behavior of its neighbors using trust ratings and performs the network activities such as cluster head selection, data aggregation, and reporting to the BS. Then, BS analyzes the received information using IDS and reports the information about the malicious activities back to nodes in the network. In this way, the proposed model identifies and isolates the malicious nodes from the data aggregation process. Simulation results show the effectiveness of this model.