PRISM is a (formerly secret) program of the National Security Agency and the FBI to "tap directly into the central servers of nine leading U.S. Internet companies, extracting audio and video chats, photographs, e-mails, documents, and connection logs". Discovery of the program, intended to track foreign targets, dismayed some Americans concerned that it might be used for domestic political advantage. Some others worried that its effectiveness in countering anti-US espionage or terrorism, might be diminished.
It has long been known that any cell phone conversation containing key words like "bomb" or "airplane" triggered NSA surveillance programs.
- U.S., British intelligence mining data from nine U.S. Internet companies in broad secret program, Washington Post, June 6-7, 2013