A new virus threat that you need to warn your staff about – “Cryptowall”
Like other viruses, it’s spread by email and is mutating everyday so there is no guarantee that your anti-virus software will detect it. There’s actually no way of telling that it’s a virus from the email itself, so you shouldn’t open any attachments unless you can confirm with the sender that it is valid. So what is the Cryptowall virus?
In particular you should look out for:
- Any emails with attachments which looks like an invoice, complaint or purchase order or from an address you don’t recognise. Always verify with the sender that this is a genuine email before you decide to open the attachment.
- Any emails with .ZIP attachments. This is how the Cryptowall attachments are usually displayed. Check it with the sender to verify it.
- Any emails with .exe attachments. These will almost definitely be a virus – never open. Usually they will hide a .exe file within a zip file. You can check the file extension to make sure.
- Personal email accounts – If using web-based email accounts like gmail, hotmail, Yahoo!, etc. – any email needs to be checked meticulously as these will not have the same level of protection as company email accounts. If you need to check your personal emails, we would recommend using your mobile phone.
So what is the Cryptowall virus?
Similar to ‘Cryptolocker’, it’s an very malicious type of virus called Ransomware that will encrypt all of the data on your servers which means you won’t be able to access it. We know how to fix the issue, but there is no easy solution. For a more detailed look, read this.
These would be our guidlines but if you have any other queries or would be interested in taking a look at any of our services, you can contact us or call us on 0208 232 1190.