This SIDToday post dated 18 January 2006 discusses how NSA is dealing with a new obstacle: IP telephony services whereby a target can obtain a US or UK phone number. A VoIP Normalization Working Group worked with NSA’s Office of General Counsel to develop a system whereby such numbers can be classified as of non US status, where certain legal protections would not apply: see the Intercept article 328 NSA Documents Reveal “Vast Network” of Iranian Agents, Details of a Key Intelligence Coup, and a Fervor for Voice-Matching Technology, 15 August 2015.
This 2005 letter from the internal NSA newsletter SIDToday responds to a previous article with further details about how the agency is dealing with Skype, noting that certain Special Collection Sites may have had access to Skype traffic, even at that point: see the Intercept article NSA Used Porn to “Break Down Detainees” in Iraq — and Other Revelations From 297 Snowden Documents, 1 March 2018.
A post from the internal NSA newsletter SIDToday dated 6 November 2003 describes how the agency shared intercepted material from international NGOS and treaty monitoring organisations working in the health sector with the DIA’s Armed Forces Medical Intelligence Center. The DIA unit was tasked with producing intelligence for the military “in support of force health protection”, particularly in the field of epidemiology: see the Intercept article How the U.S. Spies on Medical Nonprofits and Health Defenses Worldwide, 10 August 2016.
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 December 2009 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 2010 presentation and speaking notes from the NSA’s Office of Legal Counsel explains the legal authorities governing the agency’s computer network operations (CNO) activities: see the New York Times article Hunting for Hackers, N.S.A. Secretly Expands Internet Spying at U.S. Border, 4 June 2015.
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.