The threats to cyber security are myriad. As our use of mobile technology and smart appliances grows, so too does our attack surface. The technical skill required to carry out cyber-attacks is very low, with malicious software, exploits and ransomware available to buy as a service on the dark web. Data such as usernames and passwords for user accounts on websites, which have been harvested by previous breaches, are also available to buy. Ransomware is now a billion-dollar industry, and phishing, spear phishing and watering-hole attacks litter the cyber landscape.