Ransomware is one of the biggest cyberthreats right now. If you’re a home user or SME employee on the receiving end of an attack, it must feel like a lonely moment when the extortion message appears on the screen of an infected PC demanding a payment of somewhere between $300 and $1,000 in Bitcoin.

The ransomware will have taken control of the computer and encrypted all or most of its files after an employee clicked on an email attachment, usually a PDF or what looks like one.

But it’s not just SMEs that are being affected. The past year has seen ransomware attacks on large, international and government infrastructures, with the attack in Ukraine, shutting down its national bank, state power company and Kiev’s largest airport , just one month after a large number of organizations – including the NHS – fell victim to WannaCry ransomware

Here we explore what ransomware is, why businesses pay and how it can be stopped.

In order to read The Complete Guide to Ransomware in its entirety you will need to become a registered user on cio.co.uk. Click here to register.

If you are already registered to cio.co.uk then you will receive an email containing instructions on how to download The Complete Guide to Ransomware as well as the other back issues in The Complete Guide series.