Self-Healing in Unattended Wireless Sensor Networks

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Executive Summary

Wireless Sensor Networks (WSNs) appeal to a wide range of applications that involve monitoring of various physical phenomena. However, WSNs are subject to many threats. In particular, lack of pervasive tamper-resistant hardware results in sensors being easy targets for compromise. In this paper, the authors investigate cooperative self-healing in UWSNs and propose various techniques to allow unattended sensors to recover security after compromise. Their techniques provide seamless healing rates even against a very agile and powerful adversary. The effectiveness and viability of proposed techniques is assessed by thorough analysis and supported by simulation results. Finally, they introduce some real world issues affecting UWSN deployment, and provide some solutions to them as well as a few open problems calling for further investigation.

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