Lefteris Tzelepis has a 25-yr work experience in Information Technology and Security. For the past 12 years he has been holding Security Leader, IT Security Director and CISO positions for companies of the private sector. In 2015, he took over the establishment of the IT Security team for the Greek National Lottery, where until 2022 he successfully led the cybersecurity strategy in collaboration with the companies of the Group (Sazka/Allwyn). Since December 2022, he has assumed the role of CISO at Steelmet, with the aim of designing and implementing the security strategy for Viohalco companies. Holding the overall Governance of the Information Security function, his main objectives are security of the organization's IT and OT systems, development and implementation of business resilience, and raising employees’ awareness on information security.