Henrique M. Dinis Santos received his first degree in Electric and Electronic Engineering, by the University of Coimbra, Portugal, in 1984. In 1996 he got his PhD in Computer Engineering, at the University of the Minho, Portugal. Currently he is an Associate Professor at the Information Systems Department, University of Minho, being responsible for several graduate and postgraduate courses, as well as the supervision of several dissertations, mainly in the Information Security and Computer Architecture areas. He is also the president of a national Technical Committee (CT 136) related with the information system security standards. During the second semester of 1990, under an ERASMUS program, he was teaching at the University of Bristol, United Kingdom, where he was recognized as University Academic staff.