Renaud Deraison is Chief Technology Officer of Tenable. Prior to co-founding Tenable, Deraison redefined the vulnerability management market by authoring Nessus, the world’s most widely deployed vulnerability scanner, with over one million downloads. Deraison is Author of three patents related to network scanning and security, and has published his work in books and magazines. He is a member of the editorial board for the Common Vulnerabilities and Exposures Organization. In 2013, he received the Ernst and Young Entrepreneur of the Year Award for defense and security, together with Ron Gula and Jack Huffard.