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Vassilis Karkatzounis

Special Secretary for Artificial Intelligence and Data Governance

Vassilis Karkatzounis is the Special Secretary for Artificial Intelligence and Data Governance at the Ministry of Digital Governance and Artificial Intelligence of Greece. He is a lawyer specializing in Information Technology Law, holding a Law degree from the University of Athens and an LL.M. in Technology, Media and Telecommunications Law from Queen Mary University of London. He is currently a doctoral candidate at the University of the Aegean, focusing on privacy and data protection in online advertising. Vasilis has advised the Minister of Digital Governance on Cybersecurity, AI, and Internet Governance, and has represented Greece in EU and Council of Europe negotiations on the Artificial Intelligence Act and the Convention on AI. His work centers on data governance and the ethical, legal, and societal dimensions of AI, particularly in public administration and justice, and he has published widely on the intersection of technology, law, and policy.

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Michalis Bletsas

Governor, National Cybersecurity Authority Greece

Michail Bletsas is a Research Scientist and the Director of Computing at MIT's Media Lab where he has been working since 1996. He is responsible for all the infrastructure that the lab uses to produce, store, transport and consume its bits. He was a member of the core technical and design team for the “One Laptop Per Child” initiative which created OLPC's pioneering, award-winning "XO" laptop. His current research interests include network security, disinformation operations, wireless networks and building efficient high performance machine learning computing infrastructures. Over the years, he has advised governments around technology policy issues and provided expert opinion in technical matters to top-level officials. He has cofounded two companies, has been a director and consulted for many others in a variety of capacities. He has been appointed as the first Governor of the National Cybersecurity Authority of Greece in April 2024. He has implemented broadband access networks using cutting-edge technologies including one of the earliest ADSL testbeds and various wireless technologies. Mr. Bletsas has been a frequent keynote speaker in international conferences and has been engaged in many civic activities. He holds an undergraduate degree in Electrical Engineering from the Aristotle University of Thessaloniki and an MSc degree in Computer Engineering from Boston University.

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Konstantinos Kollias

President of the Economic Chamber of Greece

Konstantinos Kollias is an Assistant Professor of Finance at the Economics Department of the Democritus University of Thrace and President of the Economic Chamber of Greece since February 2014. He is Partner and member of the BoD in a consulting firm, member of the BoD and member of the Renumeration and Nomination Committee of the Athens International Airport, in which he has also served as Chairman of the Audit Committee. In the past, he has served as Special Secretary of Privatizations at the Ministry of Economy and Finance, Director General at the Educational Center for Public Servants of the Ministry of Economy and Finance, Alternate Governor of the Board of Governors of the Black Sea Trade and Development Bank (BSTDB), representing the Hellenic Republic, vice-Chairman of the Bod of the Gas Supply Company Attica S.A., member of the BoD of the Athens Urban Transport Organization, financial advisor to the Minister at the Ministry of Economy & Finance and visiting Professor at the Athens University of Economics & Finance and at the Democritus University of Thrace. Mr Kollias holds a Bachelor’s Degree in Economics from the National and Kapodistrian University of Athens, a Master’s Degree in Business Administration (MBA) from the University of Piraeus and a PhD in the same subject, from the National and Kapodistrian University of Athens.

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Pantelis Tzortzakis

Chairman of the Board of Directors & CEO, Hellenic Centre for Defence Innovation

Pantelis Tzortzakis is a seasoned entrepreneur, executive leader, and technology strategist with a track record of driving innovation, scaling businesses, and shaping national digital transformation initiatives for over three decades. Mr. Tzortzakis currently serves as Chairman of the Board of Directors and CEO of the Hellenic Centre for Defence Innovation. A recognized trailblazer, early in his career Mr. Tzortzakis founded Forthnet SA, a groundbreaking telecom and media company that became Greece’s leading alternative fixed telephony and pay-TV operator. Under his leadership as CEO (1995–2010), Forthnet disrupted the market, went public on the Athens Stock Exchange, and acquired NOVA (2017), solidifying its dominance in the pay-TV sector. Mr. Tzortzakis has been a key player in Europe’s tech and telecom policy landscape. He served on the Supervisory Board of NETIA SA, led Greece’s national Tech & Communications Federation (SEPE) as Chairman, and played a pivotal role in public sector modernization. In 2012, he was appointed Deputy Minister of e-Government, spearheading Greece’s digital transformation efforts. He’s also served at the helm at Quest Holdings SA, as CEO, President of its subsidiaries, and Executive Vice President, and held a board member position at the Hellenic Exchanges of Athens (HELEX). Prior to his current role, Mr. Tzortzakis served as Executive Vice President (2019–2024) at the Hellenic Development Bank (HDB), fostering innovation and venture capital initiatives. His expertise was recognized in academia, where he was unanimously elected as an external member of the Board of Directors of the National and Kapodistrian University of Athens (NKUA) in 2023. He holds a Master’s in Computer Science from Brooklyn College in New York and a Business Administration degree from the University of Piraeus.

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Konstantinos Gerardos

Chairman of the Board & CEO, Plaisio Computers S.A. | President, SELPE

Konstantinos Gerardos began his professional career at the age of eight, working in the Drawing Supplies Sales Department of Plaisio’s first store on Stournari Street. He continued working there on weekends and during the summer holidays until he graduated from Athens College in 1995. After completing his studies in the United States, he formally joined the company in 2003, taking responsibility for the company’s website, plaisio.gr. His responsibilities subsequently expanded to include the retail store network, Marketing and HR. Since 2012, he has served as Chief Executive Officer of the company. Key milestones in his career include Plaisio’s inclusion in Fortune’s Most Admired Companies nine times over the eleven-year history of the institution, as well as being named Retailer of the Year and e-Retailer of the Year five times to date. Plaisio has also been recognized as a Best Workplace three times, in 2017, 2019 and 2026, while Mr. Gerardos was named Retail Manager of the Year in 2020 and 2022.Mr. Gerardos has also contributed to the creation of Plaisio’s volunteer team, “Plai Sou”, through which initiatives promoting the integration of technology into education are implemented. He is also the founder and driving force behind Plaisiobots, Plaisio’s competitive robotics team, which won a gold medal at the International Robotics Olympiad in 2021, as well as the Atraktos initiative, which aims to promote positive role models and encourage social contribution through a range of activities. In July 2024, he was elected Chairman of the Board of the Association of Retail Businesses of Greece (SELPE). Since February 2026, Mr. Gerardos has also served as Chairman of the Board of Plaisio Computers, while continuing in his role as Chief Executive Officer.

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Dimitris Christoforakis

President, P.O.F.E.E.

He is a tax accountant with 30 years of professional experience and serves as the C.E.O. and Co-founder of Accounting Advisors P.C. Throughout his extensive career, he has acted as a tax consultant for several large companies and specializes in tax audit matters. At the same time, within the framework of his union activities, he serves as the President of the Panhellenic Federation of Self-Employed Tax Advisors(P.O.F.E.E.).

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Nikos Diamantopoulos

General Manager, Marketing Greece

Nikos Diamantopoulos is a founding member and key executive of Marketing Greece, bringing deep institutional knowledge of both the organization and the broader Greek tourism landscape. Holding a degree in Informatics and Telecommunications from the National and Kapodistrian University of Athens, he was the driving force behind the conception and successful launch of Discovergreece.com, the company's flagship travel platform. Over the course of his tenure, Nikos has led a wide range of high-impact strategic initiatives, consistently shaping the company's direction and growth. In May 2023, he was appointed General Manager of Marketing Greece — a role in which he continues to champion innovation and steer the organization forward.

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Panagiotis Golemis

General Manager, Cisco Greece, Cyprus & Malta

Panagiotis Golemis is an accomplished technology executive with more than 20 years of experience driving digital transformation, business growth, and innovation across the Information and Communications Technology (ICT) sector. As General Manager of Cisco for Greece, Cyprus, Malta, he leads the company's strategy, operations, and business development efforts across the region, helping organizations harness technology to accelerate growth, strengthen resilience, and unlock new opportunities in the digital economy. Throughout his career, Panagiotis has successfully combined deep technical expertise with strong business leadership, building high-performing teams and delivering transformative technology initiatives across the Banking, Manufacturing, Energy, Telecommunications, and Public sectors. He is recognized for his ability to align innovative technology solutions with business objectives, enabling organizations to modernize their infrastructure, enhance cybersecurity, improve operational efficiency, and drive sustainable growth. Prior to his appointment as General Manager, Panagiotis held several leadership roles within Cisco, including Sales Leader for Enterprise Networking and Technical Manager, where he played a key role in shaping technology strategies and driving business expansion across the region. Before joining Cisco, he held positions at IBM and the National Bank of Greece, gaining extensive experience in enterprise technology, infrastructure modernization, and large-scale digital transformation projects. With expertise spanning enterprise networking, cloud computing, cybersecurity, data center technologies, and digital transformation, Panagiotis is passionate about fostering innovation, empowering organizations to embrace emerging technologies, and contributing to the development of a more connected and digitally advanced future.

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Constantine Kamaras

Vice Chairman of the Board of Directors, ATCOM

Constantine Kamaras serves as Vice Chairman of ATCOM’s Board of Directors, a role he has held since joining the Board in 2006. He is responsible for overseeing ATCOM’s corporate communication strategy and facilitating its business growth. With a career in digital media dating back to 1994, Constantine is actively involved in key international organizations. Notably, he is Chairman Emeritus of IAB Europe and leads the "Best Practices in Digital Publishing" program at the Online Publishers Association (OPA) Europe.

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Spyros Kollias

Director of Software Development, Byte

Spyros Kollias holds a B.Sc. in Computer Science and an M.Sc. in Financial Software Engineering. He has been a member of BYTE’s executive team since 2013 and currently serves as Director of the Software Development Department, where he is also responsible for BYTE’s Public Key Infrastructure (PKI). His main interests include emerging software development technologies, the integration of AI across diverse domains, and the adoption of trust services in everyday processes.

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Antony Mavromichalis

AKAMAI Business Unit Director, ATCOM

Antony Mavromichalis is a cybersecurity expert and technical operations leader representing Akamai in Greece since 2001. With over two decades of experience, he has played a key role in securing major organizations in the finance, government, and retail sectors. As Akamai BU Director at ATCOM, he has successfully led and executed complex security projects for top Greek banks, national elections, major retail chains, and high-traffic online platforms. Antony specializes in DDoS mitigation, WAF solutions, ransomware mitigation, and cloud security, working closely with senior executives, security teams, and developers. His contributions to critical cybersecurity initiatives have earned him multiple industry awards, including the ATCOM Partner Award 2023 from Akamai Europe.

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Ioannis Michos

Founder, Chairman and Managing Director of Epsilon Net Group of Companies

Ioannis Michos is the Founder, President, and Chief Executive Officer of the EPSILONNET Group of Companies. He graduated from the School of Higher Industrial Studies of Thessaloniki and holds a Master’s degree in Banking and Finance. He is a member of the Association of International Accountants (A.I.A.) and was awarded “Innovative Entrepreneur of the Year” in 2008 in a competition organized by Ernst & Young. Starting his career as an Economist and Financial Consultant, he specialized in corporate financial organization, tax planning, and strategic analysis. His extensive expertise in Business Consulting and Financial Management has significantly contributed to the growth and innovation that define EPSILONNET. For more than 25 years, the EPSILONNET Group has been a reference point in the development of information systems. Under his leadership, the Group employs more than 1,700 people and has received widespread recognition for excellence, innovation, and workplace culture, having been distinguished as a Best Workplace for over 10 years in Greece and Europe. The company invests in cutting-edge technologies and consistently follows a path of growth, strengthening its collaboration model based on technological partnerships. As a result of this long-standing experience, the Group now offers a comprehensive portfolio of services and solutions to more than 200,000 clients, covering nearly the entire spectrum of the Greek economy. EPSILONNET is consistently ranked among the most dynamic companies in Europe, achieving recognition for four consecutive years in the list of Europe’s 500 Most Dynamic Businesses. The company has also been honored for its commitment to research and innovation and was included in The 2024 EU Industrial R&D Investment Scoreboard. Beyond his corporate achievements, Ioannis is the author of five books on economic subjects and has published numerous articles of economic interest. Since 1997, he has published the financial magazine EPSILON 7 and leads its scientific editorial team.