The chapter focuses on national security surveillance by spy agencies. The safeguards afforded for privacy under the law of national security surveillance in the U.S. and the EU appear to be motivated as much, if not more, by national self-interest as by a universal right to privacy. In the U.S., the law has traditionally protected the privacy rights of insiders far more assiduously than those of outsiders. In the EU, there is no power to act internally in the national security domain, but it has certain powers to regulate privacy externally, by setting the terms of intelligence-agency access to EU personal data. There are currently four such EU–U.S. agreements in place. Unsurprisingly, given the bilateral nature of these agreements, they reflect the traditional, self-interested logic of international law designed to further the interests of the parties to the agreement rather than the broader international community.