This NSA presentation from 24 June 2009 explains how to use the email search functionality within XKeyScore: see the Intercept article XKEYSCORE: NSA’s Google for the World’s Private Communications, 1 July 2015.

This 18 May 2010 article from the NSA internal newsletter SIDToday outlines how the agency is reacting to the growth of mobile phone services on board commercial aircraft: see the Intercept article American and British Spy Agencies Targeted In-flight Mobile Phone Use, 7 December 2016.

This document lists the 193 governments, intragovernmental organisations and other entities which the NSA was granted the legal authority to intercept communications “about” for foreign intelligence purposes in August 2010: see the Washington Post article Court gave NSA broad leeway in surveillance, 30 June 2014.

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 […]