It’s not been a great couple of weeks for people using older versions of Windows.
If you’re still running Windows 7 or 8 there is a new security threat you need to be aware of.
The bug allows any website to crash machines running Windows 7 and Windows 8.
Tech site Arstechnica first reported on the bug that is made possible by allowing a malicious website to try and load an image file with the characters “$MFT” name in the directory path.
By using these four characters, it causes enough problems that the affected device will slowly grind to a halt and eventually crash.
The Verge reported that after carrying out tests the machine they were using became unresponsive after it tried opening an image with “$MFT” included in the directory path.
It is not known yet if Microsoft will issue a fix for the problem, which affects Windows 7, Windows 8 and Windows Vista. However, Windows 10 is unaffected.
If you are running any of the older versions of Windows, there isn’t much you can do to protect yourself against the bug.
One way would be to stop images loading on websites but that would be a fairly extreme and largely unnecessary measure.
The chances of you actually coming across a malicious site actively looking to exploit the bug are fairly slim. However, to be on the safe side you may want to stick to visiting well known sites or ones that you are familiar with.
The discovery of the bug is the latest bad news for users running older versions of Windows.
Microsoft has since confirmed that Windows 10 remains the only version of its operating system that is safe from WannaCry.