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Top 12 Computer Viruses - November
By: MarkJ - 02 December, 2003 (8:58 AM)

A couple of days later than usual, yet the anti-virus firm Central Command has finally released its list of the top 12 online infections for last month (November 2003):

Central Command Releases Its Dirty Dozen - Top 12 - Computer Viruses For November 2003

Central Command, a leading provider of PC anti-virus software and computer security services today released its monthly listing of the top twelve viruses reported for November, 2003. The report, coined the "Dirty Dozen", is based on the number of virus occurrences confirmed through Central Command's Emergency Virus Response TeamŽ.

The table below represents the most prevalent viruses for November 2003, number one being the most frequent.

Ranking. VirusName Percentage
1. Worm/Gibe.C 19.2%
2. Worm/Sober 18.6%
3. Worm/Klez.E 7.7%
4. Worm/MiMail.G 7.0%
5. Worm/MiMail.C 6.4%
6. Worm/Hawawi.G 4.7%
7. Worm/MiMail.I 4.5%
8. Worm/MiMail.J 3.9%
9. Worm/MiMail.H 3.8%
10. Worm/Bugbear.B 2.4%
11. Worm/Nachi.A 1.8%
12. Worm/MiMail.A 1.6%
Others 18.4%

"Despite Worm/Gibe.C topping the chart, the Worm/MiMail family dominated the list," said Steven Sundermeier, Vice President of Products and Services at Central Command, Inc.

The Worm/MiMail family occupied six of the twelve positions and accounted for 27.2% of all confirmed virus occurrences. "As is the case with Worm/MiMail.I and Worm/MiMail.J, we are beginning to see the emerging pattern of writing computer viruses for financial gain. This increasing trend can have a serious effect on users, beyond the normal risk of computer corruption, by destroying their livelihood.
Confidential information such as credit card and bank account information is regularly sought.

Vexira Antivirus has been updated for 1011 different viruses, worms and other malicious applications during the month of November 2003.

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