2017 is the year of ransomware, says a recent report by the Institute for Critical Infrastructure Technology, an industry think tank. When it comes to battling ransomware, your best offence is a good defence.

‘Shadow IT’ is a term often used to describe information technology systems and solutions built and used inside organisations without explicit organisational approval. It is also used, along with the term ‘Stealth IT’, to describe solutions owned, specified and deployed...