The National Security Agency (NSA) is the central producer and manager of signals intelligence for the United States. Estimated to be the largest of U.S. intelligence organizations in terms of personnel and budget, the NSA operates under the jurisdiction of the Department of Defense and reports to the Director of National Intelligence.

The NSA is primarily tasked with global monitoring, collection, decoding, translation and analysis of information and data for foreign intelligence and counterintelligence purposes. The agency is authorized to accomplish its mission through clandestine means, among which is physically bugging electronic systems and allegedly engaging in sabotage through subversive software. The NSA is also responsible for the protection of U.S. government communications and information systems. Due to the organization's secrecy, NSA is at times explained to stand for "No Such Agency" or "Never Say Anything".

The National Security Agency (NSA) is the central producer and manager of signals intelligence for the United States. Estimated to be the largest of U.S. intelligence organizations in terms of personnel and budget, the NSA operates under the jurisdiction of the Department of Defense and reports to the Director of National Intelligence. The NSA is primarily tasked with global monitoring, collection, decoding, translation and analysis of information and data for foreign intelligence and counterintelligence purposes. The agency is authorized to accomplish its mission through clandestine means, among which is physically bugging electronic systems and allegedly engaging in sabotage through subversive software. The NSA is also responsible for the protection of U.S. government communications and information systems. Due to the organization's secrecy, NSA is at times explained to stand for "No Such Agency" or "Never Say Anything".