John Graham-Cumming is Chief Technology Officer at the Internet performance and security company, CloudFlare. John studied mathematics and computation at Oxford and stayed for a doctorate in computer security. As a programmer he has worked in Silicon Valley and New York, the UK, Germany and France. His open source POPFile program won a Jolt Productivity Award in 2004. He is the author of a travel book for scientists published in 2009 called The Geek Atlas and The GNU Make Book. He is best known for having successfully petitioned the UK government to apologize for its treatment of Alan Turing.