Cheriton School of Computer Science at the University of Waterloo, Canada. His research interests are in information privacy and in computer and networks security. His current research goals are to increase the security of emerging computing environments, such as location-based services, mobile social networking, and electronic voting, and to design privacy-enhancing technologies for people who want to benefit from these environments. He has a degree in computer science from ETH Zurich and an M.S. and Ph.D. in computer science from Carnegie Mellon.