These classified annexes to the Obama administration’s Cyberspace Policy Review were not published with the rest of the report in May 2009 and acknowledge that cyber defence initiatives have civil liberties implications: see the New York Times article Hunting for Hackers, N.S.A. Secretly Expands Internet Spying at U.S. Border, 4 June 2015.
This April 2012 training presentation produced by Navy Information Operations Command Maryland states that “the next major conflict will start in cyberspace”: see the Der Spiegel article The Digital Arms Race: NSA Preps America for Future Battle, 17 January 2015.
This undated NSA wiki page describes LONGHAUL, an “end-to-end attack orchestration and key recovery service for Data Network Cipher and Data Network Session Cipher traffic”: see the Der Spiegel story Prying Eyes: Inside the NSA’s War on Internet Security, 28 December 2014.
This presentation, prepared for the Pacific SIGDEV Conference in March 2011 describes the organisation, operations and modernisation of the NSA’s Special Collection Service division, which works out of US embassies and consultates across the world, in tandem with the CI
see the Der Spiegel article The NSA in Germany: Snowden’s Documents Available for Download, 18 June 2014.