ABSTRACT
Security is rapidly replacing performance as the first and foremost concern in many networking scenarios. This includes wireless sensor networks, which are becoming increasingly popular for many environmental, logistics, engineering, health, and military applications. While security prevention is important, it cannot guarantee that attacks will not be launched and that, once launched, they will not be successful. Therefore, detection of malicious intrusions forms an important part of an integrated approach to security. In this chapter, we review the basic tenets of intrusion detection in wireless sensor networks. We present the main differences between wireless sensor networks and other similar networks such as ad hoc networks, and discuss the manner in which these differences limit and guide the analysis and development of viable and effective approaches to intrusion detection. 112We also present a survey of current research in this area, and outline main challenges for future research.
