Never before has so much been known about so many. CCTV cameras, TSA scanners, NSA databases, big data marketers, predator drones, "stop and frisk" tactics, Facebook algorithms, hidden spyware, and even old-fashioned nosy neighbors--surveillance has become so ubiquitous that we take its presence for granted. While many types of surveillance are pitched as ways to make us safer, almost no one has examined the unintended consequences of living under...