This April 2010 NSA presentation explains how keyword selection works within XKeyScore: see the Intercept article XKEYSCORE: NSA’s Google for the World’s Private Communications, 1 July 2015.
This undated NSA presentation gives a technical introduction to the treatment of AppIDs within XKeyScore: see the Intercept article XKEYSCORE: NSA’s Google for the World’s Private Communications, 1 July 2015.
This 61-page NSA presentation from May 2010 provides analysts with a guide to tracking individuals within XKeyScore using the system’s fingerprint capability: see the Intercept article XKEYSCORE: NSA’s Google for the World’s Private Communications, 1 July 2015.
On Monday, 15 September, the Intercept published an op-ed by Edward Snowden in which he supported the revelation that New Zealand has implemented a system of mass surveillance, drawing on his own personal experience of using XKeyScore as an analyst.
The reliability of Prime Minister John Key’s statements on the status of domestic surveillance in New Zealand, a Five Eyes partner, has become a live issue in that country’s parliamentary election, which will be held on Saturday 20 September. In his latest statement, John Key has admitted that Edward Snowden “may well be right” about the availability New Zealand citizens’ information in XKeyScore.
This internal NSA post dated 13 April 2012 from the European Cryptologic Center in Darmstadt, Germany recounts an “XKS training blitz”: see the Der Spiegel article New NSA Revelations: Inside Snowden’s Germany File, 18 June 2014.
This short excerpt from an undated NSA presentation outlines the potential value of biometric data to the agency: see the New York Times article N.S.A. Collecting Millions of Faces From Web Images, by James Risen and Laura Poitras, 31 May 2014
This page from the NSA intranet dated July 2011 supplies advice from the NSA Offices of General Counsel (OGC) and Oversight and Compliance (NOC) on the admissibility of targeting strategies against the users of popular websites (including WikLeaks and the Pirate Bay): see the Intercept article Snowden Documents Reveal Covert Surveillance and Pressure Tactics Aimed at WikiLeaks and Its Supporters, 18 February 2014.