It seems like there is no such thing as privacy anymore. But the truth is that privacy is in danger only because we think about it in narrow, limited, and outdated ways. In this transformative work, Ari Ezra Waldman, leveraging the notion that we share information with others in contexts of trust, offers a roadmap for data privacy that will better protect our information in a digitized world. With case studies involving websites, online harassment, intellectual property, and social robots, Waldman shows how ‘privacy as trust’ can be applied in the most challenging real-world contexts to make privacy work for all of us. This book should be read by anyone concerned with reshaping the theory and practice of privacy in the modern world.