This page from GCHQ’s internal GCWiki, dated 27 May 2009 describes a system for querying mobile phone information acquired during port stops: see the Intercept article Airport Police Demanded An Activist’s Passwords. He Refused. Now He Faces Prison In The UK, 23 September 2017.
This 2009 NSA presentation, based on an internal agency newsletter article from 20 March that year, describes the growth in airlines offering onboard mobile phone services, which the Agency had alreadyu been actively collecting for at least a year: see the Intercept article American and British Spy Agencies Targeted In-flight Mobile Phone Use, 7 December 2016.
This GCHQ spreadsheet from October 2007 provides a guide to the permissibility of using named GCHQ and NSA databases and shows the absence of safeguards against exploiting the metadata of persons located in the UK: see the Intercept article Profiled: From Radio to Porn, British Spies Track Web Users’ Online Identities, 25 September 2015.
This undated dictionary produced by NSA Special Source Operations, provides glosses for several terms associated with the corporate partner FAIRVIEW, including the AT&T-specific term ‘SNRC’: see the New York Times article AT&T Helped U.S. Spy on Internet on a Vast Scale, 15 August 2015.
This undated NSA document provides a decision tree for the analysis of email addresses, IP addresses, cookies and phone numbers in XKeyScore and other agency tools: see the Intercept article XKEYSCORE: NSA’s Google for the World’s Private Communications, 1 July 2015.
This undated NSA document gives updates on various activities of the US-German Joint SIGINT Activity during 2007: see the Der Spiegel article Snowden-Dokumente: Hier sitzt die NSA in Deutschland, 18 June 2014.