Security Vendor Issues Dec. Vulnerabilities List:
"Central Command Inc. on Thursday released its so-called Dirty Dozen list of top twelve viruses for December, 2003. The report is based on virus incidents confirmed through the Medina, Ohio-based company's Emergency Virus Response Team."

According to the company, the Gibe.C worm, with its HTML e-mail message that impersonated a Microsoft Web site, retained the top spot for December, a position that Klez.E held five times during the year.…

Gibe.C—21.4 percent
Klez.E—14.7 percent
MiMail.I—12.8 percent
MiMail.J—5.9 percent
BugBear.B—5.2 percent
MiMail.K—5.1 percent
MiMail.A—3.7 percent
Sober.C—1.9 percent
Nachi—1.6 percent
MiMail.C—1.6 percent
Hawawi.G—1.2 percent
Dumaru.A—1.1 percent
Others—23.8 percent

http://www.eweek.com/article2/0,4149,1425300,00.asp?kc=EWNWS010204DTX1K0000599