This NSA presentation from December 2010 forms the first part of a course in using the agency’s CNE tools: see the Intercept article The NSA Leak is Real, Snowden Documents Confirm, 19 August 2016.
This undated entry from the NSA’s internal wiki suggests that the agency discovered an attempt by Russian intelligence to access Anna Politkovskaya’s email account, a year before she was killed in 2006: see the Intercept article Top-Secret Snowden Document Reveals what the NSA Knew about Previous Russian Hacking, 29 December 2016.
A joint US Navy and NSA report, prepared three months after a US spy plane was forced to crash land in China, assesses the degree to which surveillance secrets were compromised: see the Intercept article Burn After Reading: Snowden Documents Reveal Scope of Secrets Exposed to China in 2001 Spy Plane Incident, 10 April 2017.
This post from the internal NSA newsletter SIDToday explains how the agency is involved with domestic events – including the Democratic and Republican Conventions – despite its foreign intelligence focus: see the Intercept article NSA kept watch over Democratic and Republican conventions, Snowden documents reveal, 24 April 2017.
This undated NSA presentation describes SKIDROWE, a FORNSAT operation that surveils signals being sent to and from satellites: see the Intercept article Titanpointe: The NSA’s Spy Hub in New York, Hidden in Plain View, 16 November 2016.