Duncan Greatwood is the CEO of Xage Security, overseeing all facets of the business including corporate positioning, product and market strategy, organizational development and go-to-market acceleration. Prior to Xage, Duncan was an executive at Apple, leading search-technology projects and products. Previous to Apple, Duncan was C.E.O. of Topsy, the pioneer in social media search and analytics acquired by Apple in 2013. Prior to Topsy, he was founder and C.E.O. of PostPath, the email and security company that was acquired by Cisco. Previously, Duncan held sales and marketing Vice President roles at Virata / Globespan / Conexant, as well as earlier engineering and marketing positions at Madge Networks.
Duncan holds a B.A. (Mathematics) and M.Sc. (Computer Science) from Oxford University and an M.B.A. from London Business School.
Duncan Greatwood, CEO, Xage Security Interplay among the elements of the AI and application stack is the new cybersecurity reality. Key Highlights AI is expanding the attack surface. From user-facing…
Duncan Greatwood, CEO, Xage Security In July 2025, the White House released a new document titled Winning the Race: America’s AI Action Plan, outlining the United States’ comprehensive strategy to…
Author: Duncan Greatwood, Executive Chair, Xage Security How can company boards ensure they are addressing escalating cyber threats? Positioned at opposite ends of the business, board members and security executives…
By Duncan Greatwood, CEO, Xage Following a series of devastating ransomware attacks, the Biden Administration is keen to improve the nation’s cybersecurity posture. Without the proper incentives, however, their…
Duncan Greatwood | Xage Security A decade ago, the shift to centralized, cloud I.T. ushered in a new era of computing, helping companies avoid constant – and costly – investments…