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On the Trade-Off Between User-Location Privacy and Queried-Location Privacy in Wireless Sensor Networks

  • Author(s) / Creator(s)
  • Technical report TR09-07. By eavesdropping on a user's query in a sensor network, an adversary can deduce both the user's location and his/her area of interest. In many domains it is desirable to guarantee privacy of both places. Relying on the principle of k-anonymity, we propose an effective way to measure how well a disperse set of k queries protects the user's area of interest. However, issuing k queries instead of one facilitates the adversary determining the user's location. To address that issue, we define a quantitative measure of how much information the k queries leak about the user's location. Experiments reveal that how dispersed the k queries are has no effect on the privacy of the user's location. However, smaller k, randomized routing, and non-broadcast transmission improve the user's location privacy. We also show that compromising nodes in the user's network yields no significant advantage to the adversary over an eavesdropping strategy. | TRID-ID TR09-07

  • Date created
    2009
  • Subjects / Keywords
  • Type of Item
    Report
  • DOI
    https://doi.org/10.7939/R37H1DT7P
  • License
    Attribution 3.0 International