Ajit Gaddam is a technologist, serial entrepreneur, and a security expert specializing in cryptography, enterprise data protection, big data security, risk management, and cybersecurity issues. He is currently the Chief Security Architect of Visa, the world's largest payment network, which processed $4.5 trillion last year. Over the last decade, Ajit held senior roles at various tech and financial firms including founding two start-ups. He is an active participant in various open source and security architecture standards bodies. As a well-known security expert and industry veteran, he has authored numerous articles and whitepapers for publication and is a frequent speaker at several high-profiles conferences such as Strata + Hadoop, SABSA World Congress, and Bigdata conference. He also holds multiple patents in data security and other disruptive technologies in the payment industry including tokenization. Twitter:@ajitgaddam