https://rusi.org/sites/default/files/the_silent_threat_web_version.pdf
http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:52016DC0950&from=en
https://www.brookings.edu/articles/the-return-of-the-enemy/
http://www.nationalcrimeagency.gov.uk/publications/890-the-cyber-threat-to-uk-business-2017-2018/file