Henning Schulzrinne received degrees in economics and electrical engineering from the Darmstadt University of Technology, Germany, the University of Cincinnati, Ohio and the University of Massachusetts in Amherst, Massachusetts. He was a member of technical staff at AT&T Bell Laboratories, Murray Hill and an associate department head at GMD-Fokus (Berlin), before joining the Computer Science and Electrical Engineering departments at Columbia University, New York. He is currently serving as the Chief Technology Officer of the Federal Communications Commission (FCC). His research interests encompass systems aspects of the Internet, including include the use and development of security algorithms and protocols for prevention of denial-of-service attacks, secure multimedia services, network reliability, reputation management, and resource reservations. Protocols co-developed by him are now Internet standards, used by many Internet telephony and multimedia applications.