Costas Efthymiou is the Team Leader of the Regulatory, Strategy and Supervision Team at the Digital Security Authority of Cyprus, with a BSc in Electronic Systems Engineering and a MSc in Communications Systems and Signal Processing. He is a communications networks, information security and cybersecurity specialist with over 20 years of experience in communications network and security research, development and regulation.In his current position, his responsibilities include coordinating the development and implementation of a number of National Cybersecurity Strategy and Critical Information Infrastructure Protection actions, with representation of Cyprus in key European fora for national cybersecurity development. He has managed a number of projects related to the establishment and operations of the Digital Security Authority according to the NIS Directive, and has acted as expert evaluator for related Horizon 2020 Research and Innovation Projects.