Edward Snowden leaked a top-secret GCHQ document which details the operations and the techniques used by JTRIG unit for propaganda and internet deception. The JtrIG unit of the British GCHQ intelligence agency has designed a collection of applications that were used to manipulate for internet deception and surveillance. The hacking tools have the capability to disseminate fake information, for example artificially increasing the counter of visit for specific web sites, and could be also used to censor video content judged to be extremist”]
Source: https://securityaffairs.co/wordpress/26635/hacking/gchq-jtrig-techniques.html