The Federal Trade Commission—with its broad, independent grant of authority and statutory mandate to identify and prevent unfair and deceptive trade practices—is uniquely situated to prevent and remedy unfair and deceptive data privacy and data security practices. In an increasingly digitized world, data collection, processing, and transfer have become integral to market interactions. Our personal and commercial experiences are now mediated by powerful, information-intensive firms who hold the power to shape what consumers see, how they interact, which options are available to them, and how they make decisions. That power imbalance exposes consumers and leaves them all vulnerable. We all share data concerning ourselves with these platforms,...