Just when you thought it was safe to use your computer. Vendors of Antivirus software are now warning users of a new worm that potentially could delete EVERY FILE on an infected hard drive. Then to add insult to injury, after causing the damage, it calls the user, ?foolish.? The good news is that most antivirus vendors have updated their software to protect against this new worm and even created removal tools for those already infected.

The new worm called Winvar, has only appeared in South Korea, but experts are worried that it may hit our shores soon.

As reported in InformationWeek.com, the Winvar takes advantage of a well-known Iframe vulnerability in Microsoft's Internet Explorer and Outlook E-mail programs. The flaw makes it possible for such worms and viruses to open HTML formatted messages and execute them without user activation.

Once Winevar is on your system, it installs a virus similar to another recent worm called Funlove which tries to turn off installed antivirus software. According to F-Secure Corp., an antivirus vendor, Winevar also continuously tries to download the Symantec home page to a temporary file. "This might create a [denial-of-service] attack in case the worm becomes widespread," F-Secure writes in an advisory published Wednesday.

Infected messages may contain the following in the subject line:

Re: AVAR (Association of Anti-Virus Asia Researchers)N`4 %RegisteredOrganization% N`4 Trand Microsoft Inc.

Experts believe the worm's release may have been timed with the AVAR conference held last week in Seoul. The second subject line captures the "RegisteredOrganization" key in the Windows System Registry. If that key isn't present in the registry, the third option may be used by the worm.

When an infected computer is booted, a dialogue box titled "Make a fool of oneself" appears with the text "What a foolish thing you have done." If the "OK" button is pushed, all files on the computer system that are not open will be deleted.

This current worm illustrates why it is so important to update your anti virus program and religiously backup your important files. Antivirus vendors also recommend that you update your Windows systems with Microsoft?s critical up dates and patch the Active X vulnerability used by the worm. These can be found by clicking here.