In this episode of the Voices from DARPA podcast, Sergey Bratus, a program manager since 2018 in the agency’s Information Innovation Office, shares his educational and professional journey, beginning in the late 1970s as a computer-smitten middle-schooler in the former Soviet Union and leading to his current and prominent role among those who aim to render the increasingly prevalent and perilous software, hardware, and networks in our lives much safer to use. His fascination with computer security emerged in the 1990s as a mathematics graduate student when a computer he was programming and responsible for at Northeastern University in Boston was taken over by a hacker. “I probably owe whoever did that a beer,” Bratus tells listeners. Why? Because it set him on his life’s mission to learn as much as he can about the vulnerabilities of software and hardware with the goal of learning how to best minimize or eliminate those vulnerabilities. Noting his embrace of the hacker community for its deep and innovative expertise in this context, Bratus tells podcast listeners about how the programs he oversees at DARPA could help reduce or entirely remove even some of the most stealthy and unexpected vulnerabilities that reside in software and its logical, computational, and mathematical foundations.