Update Adobe Flash, now!
There's been another security issue with Adobe Flash, which was deemed critical by the company.
Mercifully, it has been patched, which means you'll need to do an update to make sure your computer is safe from the bug.
For those who are interested in such things, the vulnerability has the catchy name of 'CVE-2016-4117', and was spotted by FireEye engineer Genwei Jiang. It affected Windows, Mac, Chrome, and Linux devices.
Adobe said: "Successful exploitation could cause a crash and potentially allow an attacker to take control of the affected system."
It is thought that this particular bug would've got into your computer and flooded it with malvertising, which are not only irritating to deal with, but a pain to remove from your device too.
Basically, you need to check to see if you're running the latest version, to ensure you don't have a load of problems.
You should get a notification for the update in a pop-up bubble on your computer, but if not, you can download it straight from Adobe here.
Of course, there's a number of tech bigwigs who would like to see Adobe Flash vanish from the face of the planet altogether. Mozilla have blocked it by default, and Facebook's chief security officer Alex Stamos asked Adobe to kill it off for good.
As it stands, it is still here, and if you're using it or have it on your device, update it now.