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Critical vulnerability exploited in Internet Explorer 6, 7 and 8 -- but IE9 beta is safe!

A new vulnerability has been found in all major releases of Internet Explorer -- 6, 7 and 8 -- and a zero-day exploit is already in the wild.

The exploit, HTML_BADEY.A, uses the vulnerability to remotely execute code. By visiting a compromised website, encrypted files are downloaded to your computer and then decrypted to become a Trojan backdoor. Little is known about what happens after that -- this might just be a proof of concept, or it might be the beginnings of a new botnet.

For administrators, the Microsoft Security Advisory for the vulnerability suggests some ways to mitigate the risk of using Internet Explorer 6, 7 and 8 until a fix is released. Alternatively, use Internet Explorer 9 -- or any other browser!

Tags: 0-day, exploit, ie6, ie7, ie8, vulnerability, zero-day

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