Charles P. Pfleeger is an internationally known expert on computer and communications security. He spent 14 years as professor of computer science at the University of Tennessee, before moving on to computer research and consulting company, Trusted Information Systems, where he was director of European operations and senior consultant. He was also director of research, member of the staff, and chief security officer at Cable and Wireless. He has chaired the IEEE Computer Society Technical Committee on Security and Privacy and was on the editorial board of IEEE Security & Privacy magazine. Shari Lawrence Pfleeger is a widely known software engineering and computer security researcher. She served as president of Systems/Software and then as senior researcher with the Rand Corporation. As research director of the Institute for Information Infrastructure Protection, she oversaw large, high-impact computer security research projects for international government and industry clients. She has served as associate editor in chief of IEEE Software magazine, and as editor in chief of IEEE Security & Privacy magazine. Lizzie Coles-Kemp is a professor of information security at the Information Security Group, Royal Holloway University of London (RHUL). Prior to joining RHUL in 2007, Lizzie work in security practice for 17 years and held several managerial and directorship roles. During this time, she worked on the design and implementation of software access control systems, taught network security to practitioners, worked as a lead assessor in security standards for a UK certification body, and was global security officer for the British Council (a UK NGO).