Over the last two decades Brian Contos helped build some of the most successful and disruptive security companies in the world. After getting his start in security with the Defense Information Systems Agency (DISA) and later Bell Labs, Brian began the process of building security startups and taking multiple companies through successful IPOs and acquisitions including: Riptech, ArcSight, Imperva, McAfee and Solera Networks. Brian has worked in over 50 countries across six continents. Brian has published two books including Enemy at the Water Cooler—Real-Life Stories of Insider Threats and Physical and Logical Security Convergence, which he co-authored with former NSA Deputy Director William Crowell.