This GCHQ research report dated 20 September 2011, cowritten by researchers at Heilbronn Institute for Mathematical Research based at the University of Bristol, concerns the use of data mining techniques to develop usable intelligence as well as the contradictions that arise from the use of algorithms to identify wrong doers, or potential wrong doers. The paper also provides a great deal of background information on GCHQ operations and the detailed discussion of network theory demonstrates the power of metadata collection: see the Boing Boing article Doxxing Sherlock, 2 February 2016.
This page taken from GCHQ’s internal GCWiki, last modified on 18 November 2011, provides some basic information on the agency’s reverse engineering efforts: see the Intercept article Spies Hacked Computers Thanks to Sweeping Secret Warrants, Aggressively Stretching U.K. Law, 22 June 2015.
This collection of 13 spreadsheets illustrates the relationship between GCHQ and various ministries within the UK government and that agency’s work is by no means restricted to matters of national security, but also extends to domestic issues: see the Intercept article Controversial GCHQ Unit Engaged in Domestic Law Enforcement, Online Propaganda, Psychology Research, 22 June 2015.
This GCHQ document last updated on 15 June 2008 describes the purpose of the agency’s attempts to reverse engineer commercial antivirus software: see the Intercept article Popular Security Software Came Under Relentless NSA and GCHQ Attacks, 22 June 2015.
This GCHQ application for warrant renewal from June 2008 shows that the agency has been engaged in the reverse engineering of commercial antivirus software for the purposes of facilitating its hacking operations: see the Intercept article Popular Security Software Came Under Relentless NSA and GCHQ Attacks, 22 June 2015.