His research interests are in building practical secure systems, from operating systems and hardware to programming languages and security analysis tools. He received his PhD from Stanford University in 2008, where he developed HiStar, an operating system designed to minimize the amount of trusted code by controlling information flow. In 2005, he co-founded MokaFive, a company focused on improving desktop management and mobility using x86 virtualization. Prof. Zeldovich received a Sloan fellowship (2010), an NSF CAREER award (2011), the MIT EECS Spira teaching award (2013), the MIT Edgerton faculty achievement award (2014), and the ACM SIGOPS Mark Weiser award (2017).