ABSTRACT
Wireless sensor networks (WSNs) are becoming increasingly integrated into the interconnected mobile landscape of the modern world. As this integration expands, securing wireless sensor networks against intrusions becomes important. With an eye toward assessing the current state of the art in the area and toward identifying research gaps and proposing research directions, in this work we survey the literature of intrusion detection systems (IDSs) in WSNs. We start by discussing characteristics of IDSs for WSNs that lead to a taxonomy tailored to such systems. This taxonomy classifies IDSs for WSNs along four dimensions: architecture, detection technique, attack detection capability, and input data used for detection. We review 90 WSN IDS approaches that have been proposed in the literature, we classify them according to the taxonomy, and we discuss measures that can be used to evaluate the performance of IDSs for WSNs. Finally, we identify gaps in the existing work and propose directions for future research in the field.
