About the Authors Dimitrios Serpanos is a Professor of Electrical and Computer Engineering at the University of Patras, Greece, and the Director of the Industrial Systems Institute (ISI/RC Athena). Currently, he is also the chairman of the governing board of the newly founded University of Western Greece. His research interests include embedded systems, with focus on network systems, security systems and multime- dia systems, computer architecture, and parallel and distributed systems. Serpanos holds Ph.D. and M.A. degrees in Computer Science from Princeton University, Princeton, since 1988 and 1990, respectively. He received his diploma in Computer Engineering and Informatics from the University of Patras in 1985. Between 1990 and 1996 he was a research staff member at IBM Research, T.J. Watson Research Center, New York. Since November 1996 he has been a fac- ulty member in Greece. Between 1996 and 2000 he was with the Department of Computer Science, University of Crete. Currently, he is with the Department of Electrical and Computer Engineering, University of Patras, where he is a professor. During his term in Crete he conducted research at ICS-FORTH; while in Patras he has been conducting research at ISI. Professor Serpanos' research has received funding from the EU, the Greek government, and the private sector in Europe and the United States. Serpanos is a senior member of the IEEE, a member of the ACM, a member of the New York Academy of Sciences, and an educational member of USENIX. He