1. Tamkin E 10 years after the landmark attack on Estonia, is the world better prepared for cyber threats? Foreign Policy (FP); 2017 Apr 27. [accessed 2018 Oct 31]. https://foreignpolicy.com/2017/04/27/10-years-after-the-landmark-attack-on-estonia-is-the-world-better-prepared-for-cyber-threats/.
2. Turak N The next 9/11 will be a cyberattack, security expert warns. CNBC; 2018 June 1. [accessed 2018 Nov 3]. https://www.cnbc.com/2018/06/01/the-next-911-will-be-a-cyberattack-security-expert-warns.html.
3. Sussman B Revealed: details of ‘first of its kind’ disruptive power grid attack. Secure World, Seguro Group Inc; 2019 Oct 8. [accessed 2019 Dec 15]. https://www.secureworldexpo.com/industry-news/first-u.s.power-grid-attack-details.
4. Fazzini K Warnings about a massive cyberattack aren’t new- intelligence officials have raised the red flags for years. CNBC; 2018 July 24. [accessed 2018 Nov 3]. https://www.cnbc.com/2018/07/24/cyberattack-warnings-from-us-intelligence-officials-are-not-new.html.
5. Kirkpatrick DD, Nixon R U.S.U.K. Warning on cyberattacks includes private homes. New York Times; 2018 Apr 16. [accessed 2018 Nov 3]. https://www.nytimes.com/2018/04/16/world/europe/us-uk-russia-cybersecurity-threat.html.