Yoel Roth is a Technology Policy Fellow at UC Berkeley, a Non-Resident Scholar at the Carnegie Endowment for International Peace, and the former Head of Trust & Safety at Twitter. For more than 7 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 PhD 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.