Rolf Oppliger studied computer science, mathematics, and economics at the University of Berne, Switzerland, where he received M.Sc. and Ph.D. degrees in computer science in 1991 and 1993, respectively. In 1999, he received the venia legendi for computer science, and in 2007 he was appointed adjunct professor at the University of Zürich, Switzerland. The focus of his professional activities is information technology (IT) security in general, and network security in particular. He has authored more than ten books, including, for example, Contemporary Cryptography (Artech House, 2005) and SSL and TLS: Theory and Practice (Artech House, 2009), frequently speaks at security-related conferences, and regularly publishes papers and articles in scientific magazines and journals. He's the founder and owner of eSECURITY Technologies Rolf Oppliger (http://www.esecurity.ch), works for the Swiss Federal Strategy Unit for Information Technology (FSUIT), teaches at the University of Zürich, and serves as editor for the Artech House information security and privacy (former computer security) series. He is a senior member of the Association for Computing Machinery (ACM), and a member of the IEEE Computer Society and the International Association for Cryptologic Research (IACR). He also served as vice-chair of the IFIP TC 11 working group on network security.