LIDeA: A Distributed Lightweight Intrusion Detection Architecture for Sensor Networks

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Executive Summary

Wireless sensor networks are vulnerable to adversaries as they are frequently deployed in open and unattended environments. Preventive mechanisms can be applied to protect them from an assortment of attacks. However, more sophisticated methods, like intrusion detection systems, are needed to achieve a more autonomic and complete defense mechanism, even against attacks that have not been anticipated in advance. This paper presents a lightweight intrusion detection system, called LIDeA, designed for wireless sensor networks. LIDeA is based on a distributed architecture, in which nodes overhear their neighboring nodes and collaborate with each other in order to successfully detect an intrusion. The paper shows how such a system can be implemented in TinyOS, which components and interfaces are needed, and what is the resulting overhead imposed.

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