These two slides from a 22 January 2011 NSA PowerPoint presentation constitute the first document drawing on intercepted communications content to be made public. The subject of this presentation was captured in Abbottabad, Pakistan on 23 January 2011: see the Washington Post article In NSA-intercepted data, those not targeted far outnumber the foreigners who are, 5 July 2014.
This extract is taken from an undated dictionary produced by NSA Special Source Operations, providing glosses for several terms associated with MYSTIC operations. The name of one country has been redacted: see the Intercept article Data Pirates of the Caribbean: The NSA Is Recording Every Cell Phone Call in the Bahamas, 19 May 2014.
This Special Source Operations presentation describes the NSA’s problems with overcollection of data from email address books and buddy lists: see the Washington Post article NSA collects millions of e-mail address books globally, 14 October 2013.
This 32-page NSA presentation dated 25 February 2008 details XKeyscore, a tool used to search unfiltered internet traffic in real time. Two slightly different versions of this presentation have been published; both follow below: see the Guardian article XKeyscore: NSA tool collects ‘nearly everything a user does on the internet’, 31 July 2013.