My research interests are in information privacy and in computer and networks security with a focus on security and privacy challenges that arise in the context of smartphones and mobile applications. My students and I develop privacy-preserving technologies for location-based services and mobile social-networking applications that do not require users to share their personal information with application providers. We also study implicit authentication 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.