NSA

n. national organization of the shipping industry

n. national student organization

U.S. Government agency that creates and decodes ciphers to protect classified information and deals with other communications issues

The National Security Agency/Central Security Service (NSA/CSS) is the United States government's cryptologic organization that was officially established on November 4, 1952. Responsible for the collection and analysis of foreign communications, it coordinates, directs, and performs highly specialized activities to produce foreign signals intelligence information, which involves a significant amount of cryptanalysis. It is also responsible for protecting U.S. government communications and information systems from similar agencies elsewhere, which involves a significant amount of cryptography.
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Noun
1. the United States cryptologic organization that coordinates and directs highly specialized activities to protect United States information systems and to produce foreign intelligence information
(synonym) National Security Agency
(hypernym) United States intelligence agency
(member-holonym) Intelligence Community, National Intelligence Community, United States Intelligence Community, IC
(part-holonym) Department of Defense, Defense Department, United States Department of Defense, Defense, DoD

NATO Standardisation Agency
  

National Security Authority
  

National Security Anarchists (hacker group) 
No Strings Attached 
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