Kaspersky Labs: Virus Top 20 for May 2003

Kaspersky Labs presents the Virus Top 20 for the month of May, 2003.

The percentage shown represents the percentage of registered incidences.

Position – Virus – Percentage by Occurrence:
1 I-Worm.Sobig 21.87%
2 I-Worm.Lentin 15.95%
3 I-Worm.Klez 15.39%
4 I-Worm.Fizzer 0.67%
5 I-Worm.Roron
6 Worm.Win32.Randon 0.38%
7 I-Worm.Ganda 0.28%
8 Macro.Word97.Thus 0.28%
9 Backdoor.Assasin 0.24%
10 I-Worm.Tanatos 0.21%
11 Backdoor.Optix 0.20%
12 Backdoor.IRC.Zcrew 0.19%
13 Win32.Parite 0.17%
14 Win32.FunLove 0.17%
15 Backdoor.IRC.Flood 0.16%
16 TrojanDropper.JS.Mimail 0.16%
17 VBS.Redlof 0.15%
18 Backdoor.IRC.mIRC-based 0.14%
19 Backdoor.SdBot.gen 0.12%
20 TrojanDownloader.Win32.Swizzor 0.12%
Other Malicious Programs 42.66%

*not included in the Top 20