The Virus Top Twenty - June 2003 Kaspersky Labs presents the Virus Top 20 for the month of May 2003. The percentage shown represents the percentage of registered incidences.

1 I-Worm.Lentin 32.48% 2 I-Worm.Klez 17.69% 3 I-Worm.Tanatos 16.91% 4 I-Worm.Sobig 12.01% 5 Macro.Word97.Saver 1.17% 6 Macro.Word97.Thus 1.00% 7 VBS.Redlof 0.73% 8 I-Worm.Ganda 0.53% 9 Backdoor.Beastdoor 0.31% 10 Win95.CIH 0.29% 11 Backdoor.Assasin 0.28% 12 Backdoor.Optix 0.22% 13 Backdoor.SdBot.gen 0.21% 14 I-Worm Hybris 0.20% 15 Win32.Parite 0.20% 16 I-Worm.Avron 0.20% 17 I-Worm Hawawi 0.15% 18 Backdoor.Death 0.15% 19 I-Worm.Mapson 0.14% 20 Backdoor.IRC.Zcrew 0.14% Other Malicious Programs* 53.35%