This came in via the newsfeeds, and it looks to be quite serious (I’m basing that on the fact I’ve never seen such an alert before).
The Dridex malware is apparently able to harvest bank details from your computer and already UK losses are stated to be around £20 million. Dridex is spread through attachments in emails, but it can only do so if the attachment is opened.
A typical infected email might come through as an order confirmation (for something you have never ordered) with an invoice attached. Come to think of it, I’ve had quite a few of these in the past – not necessarily Dridex – but I never open them if I haven’t ordered anything that tallies with the email details.
Advice is to install good antivirus software and – if you’re infected – contact your bank and credit card company immediately. You’re also urged to report the problem to Action Fraud using the details in the link I gave above.
Apparently, only computers running Windows are at risk.