Yaha virus lingers into the New Year

A new variant of the Yaha computer virus which emerged Dec. 21 and was detected on thousands of PCs over the holiday season appears to be making a gradual retreat but is still ranked as a "medium risk" by security software vendors.

Security vendor MessageLabs Ltd., which calls the new variant W32/Yaha.K, said the rate of spread has been declining steadily since Monday when the company intercepted more than 8,000 copies of the virus. By Wednesday that figure had declined to 6,500 and it stood at just over 2,000 on Thursday afternoon in Europe.

Altogether more than 34,000 copies of the virus had been detected by the Gloucester, U.K.-based company. MessageLabs originally identified the virus as an existing variant, called Yaha.M, but has since determined that a new variant is making the rounds.

According to MessageLabs, the origin of the virus was Kuwait and computers in 100 countries have been affected by it, especially in the Netherlands, the U.K., Canada, Egypt, United Arab Emirates, Saudi Arabia and Australia.

Symantec Corp., which is calling the worm W32.Yaha.L@mm, rates the virus' threat assessment as low, the damage assessment as medium and the distribution of Yaha as high, according to information on its Web site.

McAfee.com Corp. and parent company Network Associates Inc. rated W32/Yaha.k as "medium risk" to both home and corporate users.

Helsinki's F-Secure Corp. gave the Yaha.K virus a level 2 alert on its scale of three levels, meaning the virus was causing widespread infection. It said the virus carries aliases including Yaha.M, W32/Lentin.H@mm, I-Worm.Lentin.h and Yaha.K!e2a2.

The worm affects mainly systems running Microsoft Corp.'s Windows operating system and appears as an e-mail attachment in the form of a .exe or .scr file. Infected emails carry a wide variety of subject headings and messages. The virus contains its own e-mail client to mail itself out, forging the "from" address. It attempts to close down a number of firewalls and antivirus programs, according to MessageLabs.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Laura Rohde

PC World
Show Comments

Cool Tech

SanDisk MicroSDXC™ for Nintendo® Switch™

Learn more >

Breitling Superocean Heritage Chronographe 44

Learn more >

Toys for Boys

Family Friendly

Panasonic 4K UHD Blu-Ray Player and Full HD Recorder with Netflix - UBT1GL-K

Learn more >

Stocking Stuffer

Razer DeathAdder Expert Ergonomic Gaming Mouse

Learn more >

Christmas Gift Guide

Click for more ›

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

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.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

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?