Yoel Roth is a technology policy fellow at the University of California, Berkeley, Goldman School of Public Policy and the former head of trust and safety at Twitter. For more than seven years, he led the teams responsible for Twitter’s content moderation, integrity, and platform security efforts, including policy development, threat investigation, product, design, research, and operations. His current research and writing focus on the trust and safety industry and how technology companies manage the conflicting values and incentives built into content moderation at scale. Before joining Twitter, Yoel received his Ph.D. from the Annenberg School for Communication at the University of Pennsylvania. His research and teaching examined the technical, policy, business, and cultural dynamics of social networking and dating apps at the dawn of the “App Store” age.