NSA
The Black Chamber
The agency’s origins date back to July 1917, when a man named Herbert O. Yardley became the head of the newly created Cipher Bureau of Military Intelligence.
The Cipher Bureau’s methods were somewhat questionable: deals with Western Union and other telegraph companies gave the Cipher Bureau unprecedented access to messages entering and exiting the United States. When Secretary of State Henry Stimson decided to close the agency in 1929, he cited moral opposition to its increasing surveillance, though his reasoning may also have been partly financial. In any case, Hoover’s administration did not see the need for peacetime surveillance and the agency was shuttered.