Thin Thread contained advanced data mining capabilities.It also had a "privacy mechanism"; surveillance was stored encrypted; decryption required a warrant.The documents also revealed the NSA tracks hundreds of millions of people's movements using cellphones metadata. and was part of the war effort under the executive branch without direct Congressional authorization. At that point, the unit consisted of Yardley and two civilian clerks.Internationally, research has pointed to the NSA's ability to surveil the domestic Internet traffic of foreign countries through "boomerang routing". A code and cipher decryption unit was established as the Cable and Telegraph Section which was also known as the Cipher Bureau. During the course of the war it was relocated in the army's organizational chart several times. It absorbed the navy's Cryptanalysis functions in July 1918. Army cryptographic section of military intelligence, known as MI-8, in 1919, the U. government created the Cipher Bureau, also known as Black Chamber.The research done under this program may have contributed to the technology used in later systems.
Its most notable known success was at the Washington Naval Conference, during which it aided American negotiators considerably by providing them with the decrypted traffic of many of the conference delegations, most notably the Japanese. intelligence organizations in terms of personnel and budget.As part of these responsibilities, the agency has a co-located organization called the Central Security Service (CSS), which facilitates cooperation between the NSA and other U. The NSA's actions have been a matter of political controversy on several occasions, including its spying on anti-Vietnam-war leaders and the agency's participation in economic espionage.Despite the Chamber's initial successes, it was shut down in 1929 by U. However, the AFSA was unable to centralize communications intelligence and failed to coordinate with civilian agencies that shared its interests such as the Department of State, Central Intelligence Agency (CIA) and the Federal Bureau of Investigation (FBI). Truman ordered a panel to investigate how AFSA had failed to achieve its goals.The results of the investigation led to improvements and its redesignation as the National Security Agency.
The Black Chamber successfully persuaded Western Union, the largest U. telegram company at the time, as well as several other communications companies to illegally give the Black Chamber access to cable traffic of foreign embassies and consulates.