Explore a security analysis of Facebook's political ad transparency efforts in this 41-minute conference talk. Dive into the controversies surrounding ad-driven propaganda campaigns during the 2016 U.S. elections and the subsequent responses from major tech platforms. Examine Facebook's Ad Library and political ad disclosure policies, evaluating their effectiveness and limitations. Learn about the primary findings, including the enforcement of disclosure policies and the usefulness of disclosure strings. Gain insights into authentic communities and their role in political advertising. Presented by Laura Edelson, a Ph.D. candidate and Research Assistant at NYU with extensive experience in software engineering and data analysis.