The History of Terrorism
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Society
Social issues
Social influence
Power (social and political)
Total institutions
Prisons
Prison-related crime
Cryptography
Cryptography organizations
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Category:Cryptography organizations
Parents
Cryptography
Security organizations
Children
1901-Today National Institute of Standards and Technology (NIST)
1919-1929 The Black Chamber (The Cipher Bureau)
1919-Today Government Communications Headquarters (GCHQ)
1922-1946 OP-20-G
1922-1946 OP-20-G
1941-1945 Military Intelligence Service (United States)
1947-Today Australian Signals Directorate (ASD)
1952-Today National Security Agency (NSA)
2013-Today National Cyber Security Centre (Ireland) (NCSC)
2014-Today Finnish Defence Intelligence Agency
Arlington Hall
Bletchley Park
Central Security Service (CSS)
Certificate authorities
Communications & Information Services Corps (CIS)
Cypherpunks
National cyber security centres
United States Army Signals Intelligence Service