This XKeyScore fingerprint, last modified on 6 May 2013, shows that New Zealand’s GCSB monitored candidates for the post of WTO director general: see the New Zealand Herald article How spy agency homed in on Groser’s rivals, 23 March 2015.
This undated post from an NSA discussion board describes “fourth party collection” – piggybacking on another state’s computer network exploitation operation: see the Der Spiegel article The Digital Arms Race: NSA Preps America for Future Battle, 17 January 2015.
This undated presentation from NSA’s Network Analysis Center describes agency techniques for overcoming Virtual Private Networks (VPNs): see the Der Spiegel story Prying Eyes: Inside the NSA’s War on Internet Security, 28 December 2014.
This joint GCHQ/MI6 presentation from February 2011 documents the process of international climate change negotiations becoming a “serious intelligence priority” for the UK: see the Dagbladet Information article Snowden documents reveal British climate espionage – Copenhagen climate summit targeted, 1 November 2014.
This NSA classification guide, dated 21 November 2011, covers signals intelligence material that as to be kept secret for more than the standard 60 years: see the Der Spiegel article The NSA in Germany: Snowden’s Documents Available for Download, 18 June 2014.
This NSA document from 10 September 2010 details operations against foreign embassies, concluding with a glossary of tools and tactics. Earlier versions of this docoument that only contained some of the operations conducted were published in l’Espresso on 5 December 2013 and in Le Monde on 21 October 2013: see the book No Place to Hide, 13 May 2014.