Nicolas Christin is an Assistant Research Professor in Electrical and Computer Engineering at Carnegie Mellon University, where he is also affiliated with CyLab, the computer and information security research center. In addition, he has courtesy faculty appointments in the Information Networking Institute and in Engineering and Public Policy. He holds a Diplôme d'Ingénieur from École Centrale Lille, and M.S. and Ph.D. degrees in Computer Science from the University of Virginia. After a postdoc in the School of Information at the University of California, Berkeley, he joined Carnegie Mellon in 2005. He worked for three years as resident faculty at CMU CyLab Japan, before returning to Carnegie Mellon's main campus in 2008. He subsequently served as Associate Director of the Information Networking Institute between 2008 and 2013. His research interests are in computer and information systems networks; most of his work is at the boundary of systems and policy research, with a slant toward security aspects. He has most recently focused on online crime, security economics, and psychological aspects of computer security. He equally enjoys field measurements and mathematical modeling.