Between then and the end of the Cold War, it became the largest of the U.S. Originating as a unit to decipher coded communications in World War II, it was officially formed as the NSA by President Harry S. The existence of the NSA was not revealed until 1975. The NSA relies on a variety of measures to accomplish its mission, the majority of which are clandestine. communications networks and information systems. The NSA is also tasked with the protection of U.S.
The NSA is responsible for global monitoring, collection, and processing of information and data for foreign and domestic intelligence and counterintelligence purposes, specializing in a discipline known as signals intelligence (SIGINT). The National Security Agency ( NSA) is a national-level intelligence agency of the United States Department of Defense, under the authority of the Director of National Intelligence (DNI).
