On eavesdropping attacks in wireless sensor networks with directional antennas

Hong Ning DAI*, Qiu WANG, Raymond Chi Wing WONG, Dong LI

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

44 Citations (Scopus)

Abstract

The eavesdropping attack is a serious security threat to a wireless sensor network (WSN) since the eavesdropping attack is a prerequisite for other attacks. Conventional WSNs consist of wireless nodes equipped with omnidirectional antennas, which broadcast radio signals in all directions and are consequently prone to the eavesdropping attacks. Different from omnidirectional antennas, directional antennas radiate radio signals on desired directions and potentially reduce the possibility of the eavesdropping attacks. In this paper, we propose a model to analyze the eavesdropping probability in both single-hop WSNs and multihop WSNs with omnidirectional antennas and directional antennas. We verify the correctness of our analytical model by conducting extensive simulations. We have found that using directional antennas in either single-hop WSNs or multihop WSNs can significantly reduce the eavesdropping probability. The reason of the improved security of WSNs with directional antennas lies in (i) the smaller exposure region of a directional antenna and (ii) the fewer hops to route a packet due to the longer transmission range of a directional antenna. Our results have also shown that the security improvement factor heavily depends on the node density, the antenna beamwidth, and the signal path loss factor.

Original languageEnglish
Article number760834
JournalInternational Journal of Distributed Sensor Networks
Volume2013
DOIs
Publication statusPublished - Aug 2013
Externally publishedYes

Fingerprint

Dive into the research topics of 'On eavesdropping attacks in wireless sensor networks with directional antennas'. Together they form a unique fingerprint.

Cite this