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Top 10 Viruses & Hoaxes Reported to Sophos in November 2004

  • 02 December, 2004 11:07

<p>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 during the month of November.</p>
<p>The report, compiled from Sophos's global network of monitoring stations, shows that two new major viruses – Sober-I and Bagle-AU – appeared during the month, though the prevalent Netsky-P and Zafi-B, which were first spotted in March 2004 and June 2004 respectively, continue to be major irritants.</p>
<p>The top ten viruses in November 2004 were as follows:</p>
<p>1. W32/Netsky-P 24.2%
2. W32/Sober-I 20.4% NEW ENTRY
3. W32/Zafi-B 17.9%
4. W32/Bagle-AU 11.0% NEW ENTRY
5. W32/Netsky-D 4.4%
6. W32/Netsky-Z 3.9%
7. W32/Bagle-AA 2.6%
8. W32/Netsky-B 2.4%
9. W32/MyDoom-O 2.2%
10. W32/Netsky-Q 2.1%</p>
<p>Others 8.9%</p>
<p>"Two new entrants made it into the chart last month – Sober-I and Bagle-AU. Sober-I's impact was particularly significant; it reached number two in the chart, accounting for over 20% of reports, even though it was not discovered until 19 November," said Carole Theriault, security consultant at Sophos. "Sober-I spreads by email and uses a variety of subject lines and message texts, many of which allude to important security or messaging information. This type of ruse often outwits users, who double-click on the attachment to learn about the problem. Instead of discovering more about the bogus issue, unprotected users are infecting their computers."</p>
<p>"Despite the appearance of Sober-I on the scene, relative old timers Netsky-P and Zafi-B have continued spreading, even though protection against them was made available as soon as they were first detected. Users can thwart these established threats by simply keeping their anti-virus protection up-to-date," continued Theriault.</p>
<p>Sophos analysed and protected against 1,379 new viruses in November. The total number of viruses Sophos now protects against is 97,535. Sophos research shows that over 5.6%, or one in 18 emails, circulating during the month of November were viral. This is an increase from last month's figure, which was 4.6%.</p>
<p>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.</p>
<p>Graphics of the above top ten virus chart are available at:</p>
<p>More information about safe computing, including anti-hoax policies visit:</p>
<p>About Sophos.
Sophos is a world leading specialist developer of anti-virus and anti-spam software. Sophos is headquartered in the UK and protects all types of organisations, including small- to medium-sized businesses, large corporations, banks, governments and educational institutions against viruses and spam. The company is acclaimed for delivering the highest level of customer satisfaction and protection in the industry. Sophos's products, backed by 24 hour support are sold and supported in more than 150 countries.</p>
<p>Sophos's regional head office for Australia and New Zealand is in Sydney and hosts one of the company's three Computer Virus Research and Development Laboratories to provide global support services.</p>
Paul Ducklin ( is available for comment:
+61 2 9409 9100 (tel)
+61 2 407 320 515 (mob)
+61 2 9409 9191 (fax)</p>
<p>Sophos's press contact at Gotley Nix Evans is:
Michael Henderson (
+61 2 9957 5555 (tel)
+61 413 054 738 (mobile)
+61 2 9957 5575 (fax)</p>

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