NSA electronic surveillance program
The Terrorist Surveillance Program was an electronic surveillance program implemented by the National Security Agency (NSA) of the United States in the wake of the September 11, 2001, attacks. It was...
NSA electronic surveillance program - Wikipedia
Pen register
A pen register, or dialed number recorder (DNR), is an electronic device that records all numbers called from a particular telephone line. The term has come to include any device or program that perfo...
NSA call database
MAINWAY is a database maintained by the United States' National Security Agency (NSA) containing metadata for hundreds of billions of telephone calls made through the four largest telephone carriers i...
Church Committee
The Church Committee was the United States Senate Select Committee to Study Governmental Operations with Respect to Intelligence Activities, a U.S. Senate committee chaired by Senator Frank Church (D-...