There was already news about this on mess.be yesterday. But although the ActiveX controls seem to be gone now, spyware is still spreading through Microsoft's banner network
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Whenever you see this banner in Messenger, do not click it, and if it launches any popups or warning, close them.
I saw that one today, here is what happens when you click it:
When downloading the file the virus scanner kicked in:
"Technical" details:
For those who don't know about WinFixer and its variants, read
the Wikipedia WinFixer article. If you are infected by this, read
http://www.spywareremove.com/removeWinFixer.html .
I wonder how many people that don't have a clue felt for it so far
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EDIT: Digg this
http://digg.com/security/Microsoft_is_distributing_Winfixer_malware 