An Efficient Security Mechanism for High-Integrity Wireless Sensor Networks

TL;DR

This paper presents a lightweight security mechanism for wireless sensor networks that detects and isolates compromised nodes using behavior monitoring and trust management, suitable for resource-constrained, high-integrity environments.

Contribution

It introduces a novel security solution combining misbehavior classification, behavior monitoring, and trust management to enhance security in WSNs against insider and node failure threats.

Findings

Effective detection of compromised nodes

Minimal computation and communication overhead

Suitable for resource-constrained, high-integrity WSNs

Abstract

Wireless sensor networks (WSNs) have recently attracted a lot of interest in the research community due their wide range of applications. Unfortunately, these networks are vulnerable to numerous security threats that can adversely affect their proper functioning. This problem is more critical if the network is deployed for some mission-critical applications such as in a tactical battlefield. Random failure of nodes and intentional compromise of nodes by an insider attack in a WSN pose particularly difficult challenges to security engineers as these attacks cannot be defended by traditional cryptography-based mechanisms. In this paper, a security solution is proposed for detecting compromised and faulty nodes in a WSN. The mechanism also isolates a compromised node from the network so that it cannot participate in any network activity. The proposed mechanism is based on misbehavior classification, behaviour monitoring and trust management. It involves minimum computation and communication overhead and is ideally suited for a resource-constrained, high-integrity WSN.