TOP 100 LEADERS

Title: Global Chief Information Security Officer Company: Morgan Stanley Industry: Financial Services

Alonzo has built his career across the fault lines between technology, risk and security. Since September 2021, he has served as Global CISO at Morgan Stanley, following senior security roles at Vanguard. Earlier positions at Citigroup, Capgemini and his own technology venture gave Alonzo experience in consulting, financial services and entrepreneurship. At Citi, his responsibilities included technology risk and security across international businesses. At Vanguard, he progressed through enterprise security and fraud leadership before becoming Chief Security Officer and CISO. Alonzo also holds several patents connected to cybersecurity and information systems, alongside an MBA from Wharton and an engineering degree from Cooper Union. The thread running through his career is breadth, spanning technical detail, operational risk and executive leadership. That range is especially relevant in a financial institution where security decisions can affect operations, clients and regulators simultaneously.

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