Prof. Stefanos Gritzalis is a Professor at the Department of Information and Communication Systems Engineering, University of the Aegean, Greece and the Director of the Laboratory of Information and Communication Systems Security (Info-Sec-Lab). He also serves as the Special Secretary at the Greek Ministry of Public Administrative Reform and Electronic Governance. He holds a BSc in Physics, an MSc in Electronic Automation, and a PhD in Information and Communications Security from the Dept. of Informatics and Telecommunications, University of Athens, Greece. He has been involved in several national and EU funded R&D projects. His published scientific work includes 30 books or book chapters, 95 journals and more than 125 international refereed conference and workshop papers. The focus of these publications is on Information and Communications Security and Privacy. His most highly cited papers have more than 1.250 citations (h-index=18). He has acted as Guest Editor in 25 journal special issues, and has been involved in more than 30 international conferences and workshops as General Chair or Program Committee Chair. He has served on more than 280 Program Committees of international conferences and workshops. He is an Editor-in-Chief or Editor or Editorial Board member for 15 journals and a Reviewer for more than 45 journals. He has supervised 10 PhD dissertations. He was an elected Member of the Board (Secretary General, Treasurer) of the Greek Computer Society. His professional experience includes senior consulting and researcher positions in a number of private and public institutions. He is a Member of the ACM, the IEEE, and the IEEE Communications Society "Communications and Information Security Technical Committee".