Cross-Layer Enhanced Source Location Privacy in Sensor Networks

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Executive Summary

Source location privacy is an important issue in sensor network monitoring applications. It is difficult to be addressed by traditional security mechanisms, because an external attacker may perform simple traffic analysis to trace back to the event source. Solutions such as flooding or using dummy messages have the drawback of introducing a large amount of message overhead. In this paper, the authors avoid using network-wide dummy messages by utilizing beacons at the MAC layer.

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