Stefanos Gritzalis has been a Professor of Information and Communication Systems Security at the Laboratory of Systems Security in the Department of Digital Systems at the University of Piraeus since 2019, and has been the Director of the postgraduate program "MSc in Law and Information & Communication Technologies" since 2020. He earned a B.Sc. in physics, an M.Sc. in electronic automation, and a Ph.D. in information and communications security from the department of informatics and telecommunications at the University of Athens. He is also a member of the Board of the Hellenic Authority for Communication Security and Privacy, as well as the National Commission for Human Rights. According to researchers from Stanford University and Elsevier, he is listed in the top 2% of the most cited researchers in the ICT domain around the globe. His published scientific work includes more than 14 books and 37 book chapters. Moreover, his work has been published in 336 papers (151 in refereed journals and 185 in the proceedings of international refereed conferences and workshops). The focus of his publications is on Information and Communications Security and Privacy. His most frequently cited papers have more than 12.000 citations, h-index=56, and i10-index=186, as measured by Google Scholar.