Sam Rehman

Sam Rehman is the CEO of Hitachi Cyber (Hitachi Systems Trusted Cyber Management Inc.), appointed in December 2025. A 30+ year cybersecurity and software engineering veteran, he was previously CISO and SVP, Head of Cybersecurity Business at EPAM Systems, CTO of Arxan Technologies, head of Cognizant's Digital Engineering Business, and VP of Engineering at Oracle. He holds patents in software security, cloud, storage and distributed computing.