New entries Sobig-B and Fizzer dominate this month's chart
For May 2003, the virus chart is as follows, with the most
frequently occurring virus at number one:
"May saw two new entries at the top of the chart - Sobig-B and
Fizzer," said Graham Cluley, senior technology consultant at Sophos
Anti-Virus. "Disguised as a message from Microsoft technical
support, Sobig-B spreads quickly via email and network shares.
Fizzer, meanwhile, exploited email and the KaZaA file-sharing
network. Both of these prove that it isn't enough just to block
your email gateway - companies should ensure the virus protection
on their desktops is automatically updated."
Sophos detected 611 new viruses, worms and Trojan horses in May.
The total number it now protects against is 82,048.
The top ten hoaxes reported to Sophos during May 2003 are as