National Security Agency (NSA): The NSA is a United States government agency responsible for signals intelligence (SIGINT) and information assurance. Its mission includes monitoring and collecting foreign communications and intelligence, as well as protecting U.S. government communications and data.
Technical Surveillance and Intelligence Gathering:
Signals Intelligence (SIGINT): SIGINT involves intercepting and analyzing signals, including electronic communications and radar signals. NSA is a major player in global SIGINT efforts.
Data Collection and Analysis: The NSA is known for its advanced capabilities in collecting and analyzing vast amounts of data, including communications data, to extract intelligence.