| Virus Name | Prevalence | Percentage | Instances |
|---|---|---|---|
| W32/Bagle |   | 26.75% | 2809375 |
| W32/Mytob | | 24.91% | 2616941 |
| W32/Netsky | | 22.75% | 2389643 |
| W32/MyWife | | 9.82% | 1031746 |
| W32/Virut | | 4.08% | 429045 |
| W32/Zafi | | 3.84% | 403150 |
| W32/Lovgate | | 1.71% | 180134 |
| W32/Mydoom | | 1.62% | 170219 |
| W32/Bagz | | 1.15% | 120551 |
| W32/Parite | | 0.65% | 68781 |
| W32/Sobig | | 0.64% | 67298 |
| W32/Bugbear | | 0.38% | 39574 |
| W32/Jeefo | | 0.32% | 33547 |
| W32/Funlove | | 0.31% | 32966 |
| W32/Klez | | 0.27% | 28074 |
| W32/Mabutu | | 0.14% | 15134 |
| VBS/Redlof | | 0.09% | 9364 |
| W32/Tenga | | 0.09% | 9577 |
| W32/Valla | | 0.07% | 7258 |
| W32/Womble | | 0.06% | 5920 |
| W32/Yaha | | 0.06% | 6290 |
| W32/Sober | | 0.04% | 4024 |
| W32/Reatle | | 0.03% | 3226 |
| W32/Sasser | | 0.03% | 2667 |
| W32/Magistr | | 0.02% | 2091 |
| W32/Dumaru | | 0.02% | 1673 |
| W32/Sality | | 0.02% | 1600 |
| W32/Maslan | | 0.02% | 2565 |
| W95/Spaces | | 0.02% | 1821 |
| W32/Elkern | | 0.01% | 896 |
| W32/Darby | | 0.01% | 760 |
| W32/Stration | | 0.01% | 1529 |
| W32/Rbot | | 0.01% | 577 |
| W95/Tenrobot | | 0.01% | 552 |
| W32/Traxg | | 0.01% | 1114 |
| W32/Plexus | | 0.01% | 687 |
| W32/Kriz | | 0% | 126 |
| W32/Duni | | 0% | 2 |
| W32/Gibe | | 0% | 31 |
| ALS/Bursted | | 0% | 13 |
| W32/Fizzer | | 0% | 77 |
| JS/Wonka | | 0% | 8 |
| W32/Forbot | | 0% | 325 |
| W32/Antiman | | 0% | 5 |
| W32/Mimail | | 0% | 434 |
| W32/Nimda | | 0% | 13 |
| W32/Swen | | 0% | 471 |
| W32/Dref | | 0% | 19 |
| W32/Fujacks | | 0% | 1 |
| W32/Allaple | | 0% | 272 |
| W32/Lovelorn | | 0% | 146 |
| W32/Opaserv | | 0% | 54 |
| W32/Banwarum | | 0% | 197 |
| W32/Grum | | 0% | 4 |
| VBS/Edibara | | 0% | 99 |
| W97M/Thus | | 0% | 4 |
| W32/VB | | 0% | 1 |
| W32/Kedebe | | 0% | 231 |
| W32/Chir | | 0% | 478 |
| W32/Areses | | 0% | 6 |
| VBSWG | | 0% | 1 |
| W32/Rontokbro | | 0% | 245 |
| W32/Sdbot | | 0% | 90 |
| W32/Hybris | | 0% | 306 |
| W32/Feebs | | 0% | 76 |
| DOS/Nafazit | | 0% | 1 |
| VBS/Psyme | | 0% | 69 |
| Sic | | 0% | 23 |
| JS/Fortnight | | 0% | 2 |
| W32/Piggi | | 0% | 1 |
| W32/Eyeveg | | 0% | 88 |
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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