The very first thing you should do in ensure that your Windows operating system is completely patched with the latest critical security updates from Microsoft.  You may patch your computer using Internet Explorer and going to Windows Updates http://windowsupdate.microsoft.com

Scan your computer and then apply all critical updates that it locates. After you reboot your computer go back to Windows Updates and keep scanning your computer until there are no longer any critical updates to apply.

If you do not have time to scan and reboot your computer multiple times, then you may apply the single security patch that stops the current version of the Cornficker Worm.  The patch MS08-067 (KB958644) may be downloaded from http://www.microsoft.com/downloads/details.aspx?familyid=0D5F9B6E-9265-44B9-A376-2067B73D6A03&displaylang=en.  You may have to reboot your computer after installing the patch. Even though this method will protect you in the short term, you should perform a complete system scan and installation of all critical patches as soon as possible.

In addition to patching your computer, you should also run the latest version of the Microsoft Windows Malicious Software Removal Tool.  Typically the tool is downloaded and installed whenever you download critical patches from the Windows Updates website. If you wish to download the tool, test, and clean your computer then you may follow this link: http://www.microsoft.com/downloads/details.aspx?FamilyId=AD724AE0-E72D-4F54-9AB3-75B8EB148356&displaylang=en

Always ensuring that your operating system is patched and that your anti-virus is up to date will always limit your exposure to the latest computer security scare and allow you peace of mind.

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