He holds a Bachelor’s degree in Electronics Engineering from the Technological Educational Institute of Thessaloniki, a Master's in Wireless Communication Systems from the Brunel University of London, and a PhD in Information Security from the Norwegian University of Science and Technology. He was employed as an electronic systems designer, a core network engineer at mobile communication providers, and an external researcher in academia. His fields of research include information and network security, critical infrastructure security, telecommunications and networking, security awareness, industrial control, and automation systems. He is currently an Associate Professor at the Norwegian University of Science and Technology (Department of Information Security and Communication Technology) and is a member of the Critical Infrastructure Security and Resilience group of the Center for Cyber and Information Security (CCIS).