Location Privacy Preservation in Mobile Networks

Miao Pan
Wednesday, June 24, 2015 - 15:00
EEB 248

With over 770 million GPS-enabled smartphones, location Based Service (LBS) has begun to permeate the entire mobile space. Although LBS greatly benefits the daily life of mobile device users, it has introduced significant threats to privacy. In an LBS system, even under the protection of pseudonyms, users may become victims of inference attacks, where an adversary reveals a user’s real identity and complete moving trajectory with the aid of side information, e.g., accidental identity disclosure through personal encounters. To enhance privacy protection for LBS users, in this talk, I will present a centralized location privacy preservation scheme and a distributed approach for achieving k-anonymity, respectively. For the centralized scheme, a new metric to quantify the system's resilience against inferential attack is proposed and multiple mix-zone placement is introduced to tackle this problem. In the case that there is no trusted central authority, we will include extra fake location information associated with different pseudonyms, known as dummy users, and study the behaviors of self-interested users in terms of generating dummy users from a game-theoretic perspective. We model the distributed dummy user generation as Bayesian games in both static and timing-aware contexts, analyze the existence and properties of the Bayesian Nash Equilibria for both models, and propose a strategy selection algorithm to help users achieve optimized payoffs. I will also briefly discuss my most recent work on cybersecurity, cognitive radio networks and cyber-physical systems.

Bio: Dr. Miao Pan is an Assistant Professor in the Department of Computer Science at Texas Southern University. He was a recipient of NSF CAREER Award in 2014. Dr. Pan received Ph.D. degree in Electrical and Computer Engineering from University of Florida in August 2012. Dr. Pan's research interests include cognitive radio networks, cyber-physical systems, and cybersecurity. He has published over 50 papers in prestigious journals including IEEE/ACM Transactions on Networking, IEEE Journal on Selected Areas in Communications, IEEE Transactions on Mobile Computing, and IEEE Transactions on Smart Grid, or in top conferences such as IEEE INFOCOM, ICDCS, and IEEE IPDPS. Dr. Pan serves as a Technical Reviewer for many international journals and conferences. He has also been serving as a Technical Program Committee member of several top international conferences, e.g., IEEE INFOCOM 2014 and 2015. Dr. Pan is a member of IEEE and ACM.