> CISO Spotlight: Lefteris Tzelepis on Leadership, Strategy, and the Modern Security Mandate
[AUTHOR: Tim Erlin]
[DATE: 19/12/2025 13:38]
[LANGUAGE: EN]
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 [...]
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