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01 Sep 2004

Top ten viruses and hoaxes reported to Sophos in August 2004

New virus numbers hit 33-month high, but old timers dominate reports

Sophos, a world leader in protecting businesses against spam and viruses, has published a report revealing the top ten viruses and hoaxes causing problems for businesses around the world.

The report, compiled from Sophos's global network of monitoring stations, shows that all of the top ten most frequently encountered viruses have been around for months. Number one in the chart - Zafi-B - has held the top spot in the chart for the last three months.

The top ten viruses in August 2004 were as follows:

Position Last
month
Malware Percentage of reports
11W32/Zafi-B
   47.4%
22W32/Netsky-P
   18.0%
38W32/MyDoom-O
   7.2%
43W32/Netsky-D
   4.8%
55=W32/Netsky-Z
   3.9%
64W32/Bagle-AA
   3.3%
75=W32/Netsky-B
   2.9%
8Re-entryW32/Lovgate-V
   1.9%
97W32/Netsky-Q
   1.5%
10Re-entryW32/Netsky-C
   1.4%
Others7.7%

"Although we have seen a small, ten percent, decline in reports of Zafi-B since last month, this email-aware worm doesn't look like it's going to fade into obscurity anytime soon," said Carole Theriault, security consultant at Sophos. "Protection against Zafi-B has been available for a couple of months now, and computer users need to get into the habit of updating their systems in a much more timely manner, or this nuisance will continue to dominate reports."

Sophos analysed and protected against 1,230 new viruses in August, the highest number of new viruses seen in one single month since December 2001. The total number of viruses Sophos now protects against is 93,875. Sophos figures show that over 9.3% of emails circulating during the month of August were viral.

"Despite more than 1,200 new viruses being detected in August, not one has made it into the chart this month. In fact, the entire top ten is made of viruses which have been doing the rounds for weeks if not months. A few pesky Netsky variants are still flying around, despite the arrest of the worm's alleged author a few months ago," continued Theriault.

The top ten hoaxes reported to Sophos during August are as follows:

Position Hoax Percentage of reports
1Hotmail hoax
   20.1%
2Meninas da Playboy
   9.7%
3WTC Survivor
   8.1%
4Bonsai kitten
   5.3%
5Bogus US Bank email
   3.5%
6Budweiser frogs screensaver
   3.4%
7A virtual card for you
   3.1%
8Spunkball
   2.9%
9Bill Gates fortune
   2.6%
10T-Virus
   1.9%
Others39.4%

"There are two new entries to the hoax chart this month," continued Theriault. "The 'T-Virus' hoax caused quite a bit of confusion in August - an ill-advised viral marketing ploy to promote a new video game, it used text messages telling phone users that they were infected by a virus. Meanwhile a phishing scam, the 'bogus US bank email', redirected innocent users to a website in Korea in an attempt to steal bank account details."

Sophos has made available a free, constantly updated information feed for intranets and websites which means users can always find out about the latest viruses and hoaxes.

Graphics of the virus Top Ten chart are available here.

More information about safe computing, including anti-hoax policies.

About Sophos

More than 100 million users in 150 countries rely on Sophos as the best protection against complex threats and data loss. Sophos is committed to providing complete security solutions that are simple to deploy, manage, and use and that deliver the industry's lowest total cost of ownership. Sophos offers award-winning encryption, endpoint security, web, email, mobile and network security solutions backed by SophosLabs - a global network of threat intelligence centers.

Sophos is headquartered in Boston, US and Oxford, UK. More information is available at www.sophos.com.