Explores the ongoing evolution of legal protections for personal data; maps how new digital technologies offer both the prospect of enhanced privacy protections and radical new forms of surveillance that infringe on privacy; traces how much of our contemporary economy thrives on the witting and unwitting exchange of personal data; and sketches changing popular attitudes toward privacy. Privacy has never been a given: It is constantly remade by a shifting legal, technical, socioeconomic, and cultural landscape. Uses pressing contemporary controversies, rich historical examples, and broader theoretical texts to examine the collision of privacy and other important values, including free speech, transparency and accountability, efficiency, and security. Challenges students to consider privacy as a legal, technical, socioeconomic, and cultural artifact.