His research is interests are online privacy and network security, with recent work on anonymous and metadata-private communication, censorship resistance, and analysis of encrypted traffic. He is the designer of the widely-used Off-the-Record (OTR) secure instant messaging protocol, and was responsible for the first public analysis of 802.11 security. He is the recipient of the NSF CAREER award and several best-paper awards. He has served as the chair of the Privacy Enhancing Technologies Symposium and the ACM Workshop on Privacy in Electronic Society. Prof. Borisov received his Ph.D. from the University of California, Berkeley in 2005 and a B.Math from the University of Waterloo in 1998.