High Quality Content by WIKIPEDIA articles! The National Security Agency/Central Security Service (NSA/CSS) is a cryptologic intelligence agency of the United States government, administered as part of the United States Department of Defense. Created on November 4, 1952 by President Harry S. Truman, it is responsible for the collection and analysis of foreign communications and foreign signals intelligence, which involves cryptanalysis. It is also responsible for protecting U.S. government communications and information systems from similar agencies elsewhere, which involves cryptography. As of 2008, NSA has been directed to help monitor U.S. federal agency computer networks to protect them against attacks.

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