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Special Source Operations
Division of the NSA
Special Source Operations (SSO) is a division in the US National Security Agency (NSA)[1] which is responsible for all programs aimed at collecting data from major fiber-optic cables and switches, both inside the US and abroad, and also through corporate partnerships.[2] Its existence was revealed through documents provided by Edward Snowden to media outlets in 2013 and, according to him, it is the "crown jewel" of the NSA.[3]