This slide from an undated NSA presentation demonstrates how the agency uses email and phone data to analyse the social networks of targets (the “Agent” in the diagram): see the New York Times article N.S.A. Gathers Data on Social Connections of U.S. Citizens, 28 September 2013.
This 40-page NSA presentation for the June 2012 SIGDEV conference includes a ranking of cryptographic protocols in order of ‘risk’ the they pose to the agency’s operations: see the Der Spiegel story Prying Eyes: Inside the NSA’s War on Internet Security, 28 December 2014.
This 21 May 2009 presentation from the NSA’s Center for Content Extraction includes a slide that shows that the communications of 122 heads of government were stored in the agency’s central “Target Knowledge Base”, 11 of whom are named. The collection for most of these targets was automated: see the Der Spiegel article ‘A’ for Angela: GCHQ and NSA Targeted Private German Companies and Merkel, 29 March 2013.