This thought-provoking work elaborates on the assumption that information privacy is, in its essence, comparable to information sovereignty. This seemingly rudimentary observation serves as the basis for an analysis of various information instruments in domestic and international law. It also provides for the method to resolve situations where informational domains of individuals and/or states collide. Information Sovereignty combines a philosophical and methodological analysis of the phenomena of information, sovereignty and privacy. It also encompasses more practical discussions of cybersecurity and cross-border processing of personal data, including in the context of cross-border discovery of digital evidence.