Mary Madden, a Data & Society affiliate, is a veteran researcher, writer, and nationally-recognized expert on privacy and technology, trends in social media use, and the impact of digital media on teens and parents. She is currently a senior research advisor for Common Sense Media and an adjunct professor in the Communication, Culture, and Technology program at Georgetown University. Prior to her role at Georgetown, she was a senior fellow at the Joan Ganz Cooney Center at Sesame Workshop and a lead researcher on the By/With/For Youth Initiative, an R&D project that helped the public media sector develop innovative strategies to better engage young audiences. Earlier, at Data & Society, Mary directed an initiative to explore the effects of data-centric systems on Americans’ health and well-being and led several studies examining the intersection of privacy and digital inequality. As a senior researcher for the Pew Research Center’s Internet, Science & Technology team in Washington, DC and an affiliate at the Berkman Klein Center for Internet & Society at Harvard University, she helped to build and amplify the field of youth-centered media research and privacy and technology studies.