Dr. Yonesy F. Núñez is a 6x Chief Information Security Officer, board director, and senior security executive at Surf AI, the agentic security platform closing the execution gap between detection and resolution.

Over more than two decades, Yonesy has built and scaled cybersecurity programs across financial services and critical infrastructure, including CISO and senior security leadership roles at DTCC, Jack Henry & Associates, Wells Fargo, Citigroup, The New School, and Pall Corporation. At DTCC, he served as both CISO and inaugural Chief Cybersecurity Risk Officer for an institution settling multi-quadrillion-dollar transaction volume. He has engaged directly with U.S. and global regulators including the SEC, Federal Reserve, OCC, FINRA, FCA, and Central Bank of Ireland, and has led security through M&A, consent order remediation, and enterprise modernization.

He serves as an Independent Board Director at Chain Bridge Bank, N.A. and Pentegra Retirement Services, and is a named inventor on four U.S. patents in fraud risk detection.

At Surf AI, Yonesy shapes how the world’s largest enterprises approach agentic security, from the boardroom to the analyst. He advises CISOs on where automation earns trust and where it breaks it, convenes security leaders through roundtables and industry forums, and carries the technical weight in the rooms where Surf’s own security posture is put under a microscope. He engages CISOs as a peer because he has been in the chair, and he knows why context matters more than model intelligence the moment agents start making decisions at machine speed.In a world of AI attackers, hygiene is your best defense.Context is the differentiator. Decisions are the product.