The National Security Agency (NSA) is part of the US government and is responsible for the global monitoring, collection, and processing of information and data for domestic and foreign intelligence and counterintelligence purposes, and specializes in a discipline known as signals intelligence (SIGINT). The agency is also tasked with protecting U.S. communications networks and information systems. NSA was started in 1952, and its main office is in Maryland.
Protecting the US from eavesdropping and SIGINT spying by foreign governments and agencies, called "penetration and network warfare." The agency does so by clandestine (secret) means, such as bugging electronic systems, and sabotaging their computer networks with viral software.
↑"60 Years of Defending Our Nation"(PDF). National Security Agency. 2012. p.3. Archived from the original(PDF) on 2013-06-14. Retrieved July 6, 2013. On November 4, 2012, the National Security Agency (NSA) celebrates its 60th anniversary of providing critical information to U.S. decision makers and Armed Forces personnel in defense of our Nation. NSA has evolved from a staff of approximately 7,600 military and civilian employees housed in 1952 in a vacated school in Arlington, VA, into a workforce of more than 30,000 demographically diverse men and women located at NSA headquarters in Ft. Meade, MD, in four national Cryptologic Centers, and at sites throughout the world.
↑Priest, Dana (July 21, 2013). "NSA growth fueled by the need to target terrorists". The Washington Post. Archived from the original on February 16, 2014. Retrieved July 22, 2013. Since the attacks of Sept. 11, 2001, its civilian and military workforce has grown by one-third, to about 33,000, according to the NSA. Its budget has roughly doubled.
↑Rosenbach, Marcel; Stark, Holger; Stock, Jonathan (June 10, 2013). "Prism Exposed: Data Surveillance with Global Implications". Spiegel Online. Spiegel Online International. p.2. Archived from the original on June 13, 2013. Retrieved June 13, 2013. How can an intelligence agency, even one as large and well-staffed as the NSA with its 40,000 employees, work meaningfully with such a flood of information?
Church Committee, Intelligence Activities and the Rights of Americans: 1976 US Senate Report on Illegal Wiretaps and Domestic Spying by the FBI, CIA and NSA, Red and Black Publishers (May 1, 2008).
Aid, Matthew, The Secret Sentry: The Untold History of the National Security Agency, 432 pages, ISBN978-1-59691-515-2, Bloomsbury Press (June 9, 2009).