The National Security Agency (NSA) is a cryptologic intelligence agency of the United States Department of Defense responsible for the collection and analysis of foreign communications and foreign signals intelligence, as well as protecting U.S. government communications and information systems,[1] which involves information security and cryptanalysis/cryptography.
Histories and descriptions can be found in multiple other places online:
- Time Topics: NSA.
- Federaltion of American Scientists: NSA.
- Here is the FAS's history of the NSA.
- Electronic Frontier Foundation: NSA.
- And the official website here.
