Time in Privacy Preserving LBSs: An Overlooked Dimension

A new privacy model for Location-Based Services (LBS) has been recently proposed based on users' footprints - these being a representation of the amount of time a user spends in a given area. Unfortunately, while the model is claimed to be independent from the specific knowledge of the adversary about users' footprints, the authors argue that an adversary, that has a more structured knowledge over time, can pose a threat to the privacy guarantees of the model. The major contribution of this paper is to show that time is a relevant dimension that needs to be taken into consideration when investigating LBS privacy issues. In particular, the authors show that by applying these considerations, user privacy can be violated. This claim is supported with analysis and a concrete example. Furthermore, by analyzing a real data set of vehicular traces, the authors show that the threat is actually present in a real scenario and that its effect on jeopardizing user privacy is relevant.

• Record URL:
  http://www.hindawi.com/journals/ijvt/2011/486975/
• Authors:
  • Marconi, Luciana
  • Di Pietro, Roberto
  • Crispo, Bruno
  • Conti, Mauro
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: 12p
• Serial:
  • International Journal of Vehicular Technology
  • Volume: 2011
  • Publisher: Hindawi Publishing Corporation
  • Serial URL: http://www.hindawi.com/journals/ijvt/

Subject/Index Terms

• TRT Terms: Legal rights; Location based services; Privacy; Safety; Time; Tracking systems; Travel behavior; Travelers
• Subject Areas: Highways; Law; Safety and Human Factors; I10: Economics and Administration;

Filing Info

• Accession Number: 01344950
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 20 2011 7:24AM