38th Annual IEEE Conference on Local Computer Networks (2012)
Clearwater Beach, FL, USA USA
Oct. 22, 2012 to Oct. 25, 2012
Yousef Ebrahimi , Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore County, USA
Mohamed Younis , Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore County, USA
In wireless sensor networks, all data packets are routed from the individual sensor nodes towards an in-situ base-station (BS). Such traffic pattern makes the BS vulnerable to adversary's attack. Basically, an adversary would intercept the ongoing transmissions and localize their sources. Then by employing traffic analysis techniques, an adversary would correlate the intercepted transmissions to uncover the data path which may lead to the location of the BS. Evidence theory is a well-known scheme that an adversary might use for traffic analysis. However, prior work considered only intercepted transmissions as evidences in the correlation process without factoring in the time of interception. In this paper, we argue that time-based correlation increases the accuracy of the traffic analysis and makes contemporary countermeasures ineffective. A novel technique is proposed to counter the time correlation and boost the anonymity of the BS. The technique imposes buffering delay at each relaying node on the data route in order to disturb the time correlation among consecutive transmissions. Our technique is validated through simulation.
Correlation, Wireless sensor networks, Delay, Conferences, Topology, History, Delay Buffer, Wireless Sensor Networks, Location Privacy, Anonymity, Evidence Theory, Time Correlation
Yousef Ebrahimi, Mohamed Younis, "Novel assessment metric and countermeasures for traffic attack threats in wireless sensor networks", 38th Annual IEEE Conference on Local Computer Networks, vol. 00, no. , pp. 340-343, 2012, doi:10.1109/LCN.2012.6423644