Duncan Greatwood is CEO of Silicon Valley-based Xage Security Most recently, he was an executive at Apple, helping to lead a number of Apple's search-technology projects and products, having previously served as CEO of social media search and analytics leader, Topsy Lab (acquired by Apple in 2013). Prior to this, he was founder and CEO of PostPath Inc. (acquired by Cisco in 2008), and held roles in engineering, product marketing, corporate development, and sales at Virata and 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.