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Issue No. 11 - November (2009 vol. 58)
ISSN: 0018-9340
pp: 1500-1511
Roberto Di Pietro , Università di Roma Tre, Rome
Luigi V. Mancini , Università di Roma La Sapienza, Rome
Claudio Soriente , University of California, Irvine, Irvine
Angelo Spognardi , INRIA, Rhône-Alpes
Gene Tsudik , University of California, Irvine, Irvine
In recent years, Wireless Sensor Networks (WSNs) have been a very popular research topic, offering a treasure trove of systems, networking, hardware, security, and application-related problems. Much of prior research assumes that the WSN is supervised by a constantly present sink and sensors can quickly offload collected data. In this paper, we focus on Unattended WSNs (UWSNs) characterized by intermittent sink presence and operation in hostile settings. Potentially lengthy intervals of sink absence offer greatly increased opportunities for attacks resulting in erasure, modification, or disclosure of sensor-collected data. This paper presents an in-depth investigation of security problems unique to UWSNs (including a new adversarial model) and proposes some simple and effective countermeasures for a certain class of attacks.
Wireless sensor networks, data survival, mobile adversary.

G. Tsudik, L. V. Mancini, A. Spognardi, C. Soriente and R. Di Pietro, "Data Security in Unattended Wireless Sensor Networks," in IEEE Transactions on Computers, vol. 58, no. , pp. 1500-1511, 2009.
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