Nimda variant makes headway, author sends message

The variant of the Nimda worm discovered Tuesday had spread across much of the globe by midday Eastern time Wednesday and the worm's author is also spreading a message of his or her own in this new version, according to antivirus firm F-Secure Corp.

Nimda.e, the new variant, is a recompiled version of the original worm that functions in the same way as the original, but has some of its files renamed. What's entirely new to this version, however, is that the author of the worm has included a message to the world, according to Fred Fondreist, director of business development at antivirus firm F-Secure Corp.

Nimda's author has included something that reads very much like a copyright notice in the worm's code, as well as a note expressing his frustration that the worm is being called Nimda, rather than "CV" or "concept virus," the names he had intended, Fondreist said. There is an older, separate virus with the name "concept."

The new worm is spreading quickly and users are urged to patch their systems and update their antivirus programs, Fondreist said. F-Secure Wednesday raised the threat level of the variant to the highest level because of how far the worm has spread, he said. Other antivirus firms have yet to raise the new Nimda above a medium-level threat, though some have it ranked even lower.

Antivirus company Trend Micro Inc. has yet to see a significant spread out the worm outside of Asia, according to spokesman David Perry.

"If it makes it into general circulation in the U.S., it will not have the same punch as Nimda.a (the original worm)," thanks to the high number of users who have applied patches, he said. He expects that users in Asia will apply the proper patches after this outbreak.

The Nimda worm first caused problems for Internet users in mid-September. Nimda spreads itself as an e-mail attachment, via server-to-server Web traffic, through shared hard disks on networks and by automatically downloading infected files to users who browse Web pages hosted on infected servers. The worm exploits flaws in Microsoft Corp.'s Internet Explorer Web browser and in the company's IIS (Internet Information Server) Web server platform. Patches for both applications are available.

All the appropriate patches and upgrades offered by Microsoft can be found at

Join the newsletter!


Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Sam Costello

Show Comments

Brand Post

Most Popular Reviews

Latest Articles


PCW Evaluation Team

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?