San Diego. He received his PhD in 2001 from the University of Washington and previously was a research staff member at Carnegie Mellon University. In 2004, he was named a Sloan fellow. Stefan’s research interests are both broad and trendy: he used to focus on operating systems issues, only to find himself identified as a networking researcher, but since embracing networking he’s been labeled a computer security person. In reality, Stefan is a dabbler — learning enough to make trouble for others. When not visiting workshops, he attends committees and participates in study groups. He is slowly learning how to say “no” with increased frequency.