Nickolai Zeldovich is a professor of Electrical Engineering and Computer Science at MIT, and a member of the Computer Science and Artificial Intelligence Laboratory. He received his PhD from Stanford University in 2008. His research interests are in building practical secure systems. Recent projects by Prof. Zeldovich and his students and colleagues include the CryptDB encrypted database, the STACK tool for finding undefined behavior bugs in C programs, the FSCQ formally verified file system, the Algorand cryptocurrency, and the Vuvuzela private messaging system. He has been involved with several start-up companies, including MokaFive (2005), PreVeil (2015), and Algorand (2017), and his work has been recognized by several best paper awards at the ACM SOSP conference and by the ACM SIGOPS Mark Weiser award.