This internal NSA technical update from March 2013 provides metrics about the information from the access point codenamed MONEYROCKET, which was the NSA’s source for tracking Bitcoin users: see the Intercept article The NSA Worked To “track Down” Bitcoin Users, Snowden Documents Reveal, 20 March 2018.

This internal NSA technical newsletter states that the source of information codenamed MONEYROCKET is collecting information on “senders and receivers of bitcoin” and users Liberty Reserve: see the Intercept article The NSA Worked To “track Down” Bitcoin Users, Snowden Documents Reveal, 20 March 2018.

This extract from a 2009 GCHQ presentation includes a report on PRESTON, the agency’s programme for intercepting the communications of individuals or organisations who are subject to surveillance warrants. The report found that, in one six-month period, 97% of such communications had not been viewed by the authorities: see the Intercept article Facing Data Deluge, […]

These July 2009 documents provide a full list of the fibre-optic cables GCHQ had access to at that point, including details of location, bandwidth and corporate partners: see the Süddeutsche Zeitung article Snowden-Leaks: How Vodafone-Subsidiary Cable & Wireless Aided GCHQ’s Spying Efforts, 25 November 2014. […]

This internal NSA technical update from March 2013 makes it clear that information from the access point codenamed MONEYROCKET, which tracked Bitcoin users, could be accessed through the agency’s main search interface for analysts, XKeyScore: see the Intercept article The NSA Worked To “track Down” Bitcoin Users, Snowden Documents Reveal, 20 March 2018.

This internal NSA technical update from March 2013 describes a source of information codenamed MONEYROCKET, which provides data on users of the digital currency Bitcoin: see the Intercept article The NSA Worked To “track Down” Bitcoin Users, Snowden Documents Reveal, 20 March 2018.