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Protecting Location Privacy in Sensor Networks Against a Global Eavesdropper.

NameProtecting Location Privacy in Sensor Networks Against a Global Eavesdropper.
CategoryMobile Computing

While many protocols for sensor network security provide confidentiality for the content of messages, contextual information usually remains exposed. Such information can be critical to the mission of the sensor network, such as the location of a target object in a monitoring application, and it is often Important to protect this information as well as message content. There have been several recent studies on providing location privacy in sensor networks. We first argue that a strong adversary model, the global eavesdropper, is often realistic in practice and can defeat existing techniques. We then formalize the location privacy issues under this strong adversary model and show how much communication overhead is needed for achieving a given level of privacy. We also propose two techniques that prevent the leakage of location information: periodic collection and source simulation. Periodic collection provides a high level of location privacy, while source simulation provides trade-offs between privacy, communication cost, and latency. Through analysis and simulation, we demonstrate that the proposed techniques are efficient and effective in protecting location information from the attacker.

is ieee
ieee paper year2012
price rangemedium
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