Serge is Research Director of the Usable Security & Privacy Group at the International Computer Science Institute (ICSI) and a research scientist within the Department of Electrical Engineering and Computer Sciences (EECS) at the University of California, Berkeley. BLUES is the union of his two affiliations. His research focuses on usable privacy and security, with the specific aim of better understanding how people make decisions surrounding their privacy and security, and then creating improved interfaces that better align stated preferences with outcomes. This has included human subjects research on social networking privacy, access controls, authentication mechanisms, web browser security warnings, and privacy-enhancing technologies. He received his PhD from Carnegie Mellon University and prior to that was an undergraduate at the University of Virginia. He has also performed research at NIST, Brown University, Microsoft Research, and Xerox PARC.