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ReverseCloak: Protecting Multi-level Location Privacy over Road Networks

Li, Chao and Palanisamy, Balaji (2015) ReverseCloak: Protecting Multi-level Location Privacy over Road Networks. In: 24th ACM International Conference on Information and Knowledge Management, 18-23 Oct 2015, Melbourne, Australia.

Abstract

With advances in sensing and positioning technology, fueled by the ubiquitous deployment of wireless networks, locationaware computing has become a fundamental model for offering a wide range of life enhancing services. However, the ability to locate users and mobile objects opens doors for new threats - the intrusion of location privacy. Location anonymization refers to the process of perturbing the exact location of users as a cloaking region such that a user’s location becomes indistinguishable from the location of a set of other users. A fundamental limitation of existing location anonymization techniques is that location information once perturbed to provide a certain anonymity level cannot be reversed to reduce anonymity or the degree of perturbation. This is especially a serious limiting factor in multi-level privacy-controlled scenarios where different users of the location information have different levels of access. This paper presents ReverseCloak, a new class of reversible location cloaking mechanisms that effectively support multi-level location privacy, allowing selective de-anonymization of the cloaking region to reduce the granularity of the perturbed location when suitable access credentials are provided. We evaluate the ReverseCloak techniques through extensive experiments on realistic road network traces generated by GTMobiSim. Our experiments show that the proposed techniques are efficient, scalable and provide the required level of privacy.


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Details

Item Type: Conference or Workshop Item (Paper)
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Li, Chaochl205@pitt.educhl205
Palanisamy, Balajibpalan@pitt.edu
Date: 2015
Journal or Publication Title: CIKM '15 Proceedings of the 24th ACM International on Conference on Information and Knowledge Management
Publisher: ACM
Place of Publication: New York, NY, USA
Page Range: pp. 673-682
Event Title: 24th ACM International Conference on Information and Knowledge Management
Event Dates: 18-23 Oct 2015
Event Type: Conference
DOI or Unique Handle: 10.1145/2806416.2806437
Schools and Programs: School of Information Sciences > Information Science
Refereed: Yes
ISBN: 978-1-4503-3794-6
Official URL: http://dl.acm.org/citation.cfm?id=2806437
Date Deposited: 14 Jul 2017 16:40
Last Modified: 14 Jul 2017 16:40
URI: http://d-scholarship.pitt.edu/id/eprint/32720

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