![]() ![]() In that short time frame, however, it seems to provide a very accurate digital fingerprint of any designated target in the world. The database only has the capacity to store the massive volume of the data it collects for a few days, so essentially the XKeyscore system is best used for real time tracking of targets. One of the limitations of XKeyscore is storage. ![]() Through the XKEYSCORE program, the US National Security Agency analyzed vast amounts of Internet data and communications. The data can be sorted by typing in a name, email address, or IP address, or extracted through queries, such as "My target speaks German but is in Pakistan - how can I find him?" The Privacy and Civil Liberties Oversight Board (PCLOB) has conducted a classified investigation into the government’s surveillance program XKEYSCORE, but one of the investigators disagrees. According to a Glenn Greenwald article in The Guardian, XKeyscore is a sort of custom search engine that allows analysts to search through vast databases containing emails, online chats and the browsing histories of millions of individuals. XKEYSCORE is a computer system used by the NSA to search and analyze internet data from many sources worldwide, enabling almost unlimited surveillance of anyone anywhere in the world. ![]()
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