Eleftherios is a data protection lawyer admitted to practice in Greece and serves as the Executive Director of the Greek civil society organisation "Homo Digitalis", which is a member at the European Digital Rights (EDRi) network. He holds a LLB from National and Kapodistrian University of Athens, a LLM on Law and Technology from Tilburg University Law School and a MSc in Digital Humanities from the Computer Science School of KU Leuven. Eleftherios represents Homo Digitalis in various international observatories and advisory boards related to AI and human rights, while he is a Fellow of Information Privacy at IAPP holding CIPP/E, CIPT, CIPM certifications.