2026 BayAreaCISO ORBIE Awards

2026

BayAreaCISO ORBIE Awards

Large Enterprise Finalists

Over $4B annual revenue

2026 BayAreaCISO ORBIE Awards · Large Enterprise Finalist

John Byun

CISO

Sephora

John Byun

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Bio

John Byun is the Chief Information Security Officer for Sephora North America, where he leads all cybersecurity operations and strategy. Known for challenging conventional security orthodoxy, he champions a forward-looking approach built for a rapidly evolving threat landscape, embracing AI-driven innovation over legacy best practices. His leadership reflects a conviction that security must evolve as fast as the technology and risks it defends against.

Success Story

One of our proudest achievements has been transforming our cybersecurity program from a relatively immature state into the most mature and forward-thinking across LVMH, outpacing over 40 other CISOs in just a few years. We have consistently led the group in adopting and implementing cutting-edge technologies, including passwordless authentication via biometrics and device trust, ransomware resilience, Network Detection & Response, CWPP, CSPM, API security, CAASM, PAM, automated penetration testing, SaaS security, and next-generation bot protection. As a result, other brands across LVMH regularly turn to us for strategic guidance on developing and strengthening their own cybersecurity programs.

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