Top ten viruses reported to Sophos in August 2000

Sophos Press Release

As compiled by Sophos Anti-Virus

This is the latest in a series of monthly charts counting down the ten most frequently occurring viruses as compiled by Sophos, worldwide leaders in anti-virus protection.

For August 2000, the chart is as follows, with the most frequently occurring virus at number one:

Position Last
Malware Percentage of reports

"In a month of hype about Pokemon viruses and Palm trojans it is interesting to view statistics of the true virus threat. Email-aware script worms dominate the charts," said Graham Cluley, head of corporate communications for Sophos Anti-Virus. "Kakworm continues to be the most commonly encountered virus worldwide. Many companies have still not bothered to roll-out the patch Microsoft issued last year to protect against it."

The main issue in the anti-virus industry in August has been the hyping of viruses for mobile platforms such as WAP and Palmtops. However, no virus currently exists for these platforms.

VBS/Kakworm exploits security vulnerabilities in Microsoft Internet Explorer and Microsoft Outlook which mean it is possible to be infected just by reading an email, rather than by launching an attached file.

More details on VBS/Kakworm and how to protect against it are described here.

Compiled by Sophos's technical support team, the top ten chart is collated from calls to Sophos's 24 hour, 365 days a year technical support line.

Graphics of the above Top Ten chart are available here.

More than 100 million users in 150 countries rely on Sophos’ complete security solutions as the best protection against complex threats and data loss. Simple to deploy, manage, and use, Sophos’ award-winning encryption, endpoint security, web, email, mobile and network security solutions are backed by SophosLabs - a global network of threat intelligence centers. Sophos is headquartered in Oxford, U.K., and is publicly traded on the London Stock Exchange under the symbol “SOPH.” More information is available at