(Business Insider) — Microsoft on Monday issued an emergency security warning saying that hackers have found a way to booby-trap certain common Word file with the extension”.rtf”.

Microsoft says it’s aware of attacks going on now, but there’s no fix yet to stop the hackers. It’s working on a way to stop the bug.

The only way to be sure your computer won’t get infected is to not open a document with the “.rtf” extension until Microsoft says it’s fine to do so.

This is the very worst kind of attack. A hacker that manages to get people to open the booby-trapped file can gain control of your computer. From there, the hacker can do all kinds of things. For instance, the hacker can turn your computer into a so-called “zombie” by putting it on an illegal “botnet.” That means hackers can use your computer as part of a bigger network of computers to do all kinds of illegal things, like sending spam, spreading viruses, or committing fraud.

Even more scary is that the hack could work even in “preview” mode. That’s where you don’t actually open the file, but view it in an email instead. Outlook, for instance, lets you preview attachments.

Microsoft is currently recommending that you block all “.rtf” documents from your computer. It released a free tool which will set that up 

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CLARK KENT @ AMERICAS FREEDOM FIGHTERS

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