The ubiquity of information technology augurs a new golden age of espionage. Intelligence is the use of deceptive means for strategic ends. It encompasses the collection of secrets, analysis and decision support, covert action and influence, and counterintelligence. Modern computational networks expand the opportunities for all these types of intelligence, for new types of actors to engage in intelligence activities, and for almost anyone or anything to become intelligence targets. Yet large-scale information systems also amplify the classic ethical, operational, and strategic challenges associated with intelligence. Many of the policy controversies associated with cybersecurity, for instance, are not simply novelties of the Internet age, but rather are symptomatic of the uneasy relationship between counterintelligence and democracy. Understanding the technology used for cyber intrusion may be necessary for understanding cyber conflict, but it is not sufficient for comprehending its strategic ends and limits: it is further necessary to understand the political logic of intelligence.