Lefteris Tzelepis, CISO at Steelmet /Viohalco Companies, was shaped by cybersecurity. From his early exposure to real-world attacks at the Greek Ministry of Defense to building and leading security programs inside complex enterprises, his career mirrors the evolution of the CISO role itself. Now a group CISO overseeing security across multiple organizations, Lefteris brings a practitioner’s mindset to leadership and incident response. In this spotlight, he shares how military-grade security thinking influenced his approach, why…
