TOP 10 – SECURITY LEADERS IN EUROPE

COMPANY: SANTANDER EMPLOYEES: 185,000 JOB TITLE: GLOBAL CISO FOUNDED: 1857

Hazel Díez Castaño serves as the Global CISO for Banco Santander, leveraging more than 20 years of multidisciplinary expertise developed across Deloitte and Aviva. Spanning all three lines of defence, her holistic strategy seamlessly unites technical execution with senior governance. A highly accomplished stakeholder manager, Hazel commands decentralised, multicultural teams to address critical risks, from securing agile development lifecycles to engineering post-quantum cryptography migration plans and leading pioneering sectorwide fraud prevention initiatives.

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