I'm not aware of that threat. Are you sure that it isn't one of these spam pages to get you to buy anti-virus/reg cleaner.
You fail to mention which browser (I assume that the tab is on a browser), which OS and what anti-virus/malware you have.
You should immediately run a full anti-virus scan preferably in safe mode. If you haven't already got it then I suggest you run Malwarebytes.