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My research interests are in information privacy and in computer and networks security. My focus is on security and privacy challenges that arise in the context of smartphones and mobile applications. My students and I develop privacy-preserving solutions for location-based services and mobile social-networking applications that do not require smartphones to continuously release information about their owner to application providers. We also study implicit authentication schemes for smartphones, where a smartphone continuously authenticates its owner based on the owner's behaviour without requiring deliberate actions by the owner. I have also worked on privacy-preserving location verification technologies, genomic privacy, and end-to-end voter-verifiable voting systems.

I am a member of the Cryptography, Security, and Privacy (CrySP) research group, the Centre for Applied Cryptographic Research and the Systems and Networking Group.

I am involved with the Digital Media Enabling Technologies project.

I completed my Ph.D. in Computer Science at Carnegie Mellon in August 2005. Prior to that, I received an M.S. in Computer Science from Carnegie Mellon and a Dipl. Informatik-Ing. ETH from ETH Zürich (Curriculum Vitae).

My research is supported by NSERC and Google.

I am looking for a postdoc.