| Virus Name | Prevalence | Percentage | Instances |
|---|---|---|---|
| W32/Klez |   | 79.65% | 8344 |
| W32/Magistr | | 6.05% | 634 |
| W32/Elkern | | 2.73% | 286 |
| W32/SirCam | | 2.42% | 254 |
| W32/Hybris | | 2.1% | 220 |
| W32/BadTrans | | 1.92% | 201 |
| W32/Onamu | | 1.35% | 141 |
| W32/Nimda | | 0.68% | 71 |
| W32/Gibe | | 0.55% | 58 |
| VBS/Haptime | | 0.32% | 34 |
| W32/MTX | | 0.24% | 25 |
| W32/Funlove | | 0.2% | 21 |
| W32/FBound | | 0.2% | 21 |
| W95/CIH | | 0.19% | 20 |
| W32/Yaha | | 0.13% | 14 |
| Netlog | | 0.11% | 11 |
| VBS/LoveLetter | | 0.11% | 12 |
| W32/Aliz | | 0.11% | 11 |
| JS/Kak | | 0.09% | 9 |
| W32/Mylife | | 0.07% | 7 |
| W97M/Marker | | 0.07% | 7 |
| W32/QAZ | | 0.07% | 7 |
| W32/Pretty | | 0.05% | 5 |
| W32/Bymer | | 0.04% | 4 |
| W32/Nahata | | 0.04% | 4 |
| W32/Benjamin | | 0.04% | 4 |
| W32/Ska | | 0.04% | 4 |
| JS/Fortnight | | 0.04% | 4 |
| W97M/Ethan | | 0.03% | 3 |
| W32/Goner | | 0.02% | 2 |
| W32/Gokar | | 0.02% | 2 |
| W97M/Thus | | 0.02% | 2 |
| XM/Laroux | | 0.02% | 2 |
| IIS | | 0.02% | 2 |
| Stages | | 0.02% | 2 |
| W95/Spaces | | 0.02% | 2 |
| W32/GOP | | 0.02% | 2 |
| W95/Caw | | 0.02% | 2 |
| W32/Porkis | | 0.01% | 1 |
| Class | | 0.01% | 1 |
| Destroyer | | 0.01% | 1 |
| Concept | | 0.01% | 1 |
| Slim | | 0.01% | 1 |
| Parity Boot | | 0.01% | 1 |
| W32/Shoho | | 0.01% | 1 |
| Melissa | | 0.01% | 1 |
| Groov | | 0.01% | 1 |
| W32/Aplore | | 0.01% | 1 |
| Pathetic | | 0.01% | 1 |
| W32/Zoher | | 0.01% | 1 |
| Cascade | | 0.01% | 1 |
| W32/BleBla | | 0.01% | 1 |
| Quiet | | 0.01% | 1 |
| W32/Demiurg | | 0.01% | 1 |
| Joshi | | 0.01% | 1 |
| VMPCK | | 0.01% | 1 |
| AntiCMOS | | 0.01% | 1 |
| Story | | 0.01% | 1 |
| W32/Navidad | | 0.01% | 1 |
| SQL/Spider.B | | 0.01% | 1 |
The Virus Bulletin prevalence table is compiled monthly from virus reports received by Virus Bulletin; both directly, and from other companies who pass on their statistics.
Reports are included only if they are confirmed, and hence, in conjunction with the WildList, the prevalence table provides a useful indication of the relative prevalence of various virus found in the wild at the time.
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