NIKOLAOS G. BARDIS received the diploma of Computer Engineering and the PhD degree from National Technical University of Ukraine (Polytechnic Institute of Kiev) in 1995 and 1999 respectively. He is currently an Associate Professor of the Department of Mathematics and Engineering Sciences at the Hellenic Army Academy. Collaborates as a lecturer and researcher at the University of Athens - Department of Mathematics and entered the postgraduate course of Cryptography and Security of Information Systems. His research interests include cryptography and data security, information theory, coding theory, systems engineering and applications in defence. He has published in over 50 peer-reviewed journals and conferences. He is a member of the Technical Chamber of Greece, Technical Program Committee (TPC) of the IEEE Communication Society (COMSOC), IEEE Computer Society Technical Committee on Computer Communications (TCCC), Technical Council on Software Engineering (TCSE) of the IEEE Computer Society and IEEE Information Theory Society.