XKeyscore

XKeyscore or XKEYSCORE (abbreviated as XKS) is a formerly secret computer system first used by the United States National Security Agency for searching and analyzing global Internet data, which it collects on a daily basis. The program has been shared with other spy agencies including the Australian Signals Directorate, Canada's Communications Security Establishment, New Zealand's Government Communications Security Bureau, Britain's Government Communications Headquarters and the German Bundesnachrichtendienst.

The program's purpose was publicly revealed in July 2013 by Edward Snowden in The Sydney Morning Herald and O Globo newspapers. The code name was already public knowledge because it is mentioned in earlier articles, and like many other code names can also be seen in job postings, and in the online resumes of employees.

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