“A consistently eye-opening history of our government’s efforts to effectively manage our national security in the face of the largely open global communications network established by the World Wide Web. . . . The great strengths of Dark Territory . . . are the depth of its reporting and the breadth of its ambition. . . . The result is not just a page-turner but consistently surprising. . . . One of the most important themes that emerges from Mr. Kaplan’s nuanced narrative is the extent to which defense and offense are very much two sides of the same coin. . . . The biggest surprise of Dark Territory is the identity of the most prominent domestic heroes and villains in the “secret history.” . . . Dark Territory is the rare tome that leaves the reader feeling generally good about their civilian and military leadership.” (The New York Times)

“Dark Territory captures the troubling but engrossing narrative of America’s struggle to both exploit the opportunities and defend against the risks of a new era of global cyber-insecurity. Assiduously and industriously reported. . . . Kaplan recapitulates one hack after another, building a portrait of bewildering systemic insecurity in the cyber domain. . . . One of the deep insights of Dark Territory is the historical understanding by both theorists and practitioners that cybersecurity is a dynamic game of offense and defense, each function oscillating in perpetual competition.” (The Washington Post)