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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Tim Erlin

Source: Security Boulevard
Source Link: https://securityboulevard.com/2025/12/ciso-spotlight-lefteris-tzelepis-on-leadership-strategy-and-the-modern-security-mandate/