Dimitris Mitropoulos is the Head of the Reliability Engineering Directorate of the Greek National Infrastructures for Research and Technology (GRNET) and a Researcher at the Athens University of Economics and Business. Previously, he has been a Postdoctoral Researcher at the Network Security Laboratory (NSL) of Columbia University in the City of New York. Dimitris holds a PhD in Computer Security from the Athens University of Economics and Business and has been involved in several EU and US funded R&D projects. His research interests include computer security, software reliability, software engineering and applied cryptography. He is a member of ACM, IEEE, SysSec, and an official writer for the ACM Computing Reviews journal.