| Virus Name | Prevalence | Percentage | Instances |
|---|---|---|---|
| W32/Netsky |   | 66.95% | 30208 |
| W32/Bagle | | 10.12% | 4567 |
| W32/Bagz | | 7.85% | 3542 |
| W32/Mydoom | | 5.43% | 2448 |
| W32/Mytob | | 1.43% | 647 |
| W32/Funlove | | 0.87% | 393 |
| W32/Zafi | | 0.82% | 370 |
| W32/Klez | | 0.8% | 359 |
| W32/Mabutu | | 0.67% | 304 |
| W32/Dumaru | | 0.62% | 279 |
| W32/Lovgate | | 0.61% | 273 |
| W32/Bugbear | | 0.38% | 170 |
| W32/MyWife | | 0.37% | 167 |
| W32/Pate | | 0.33% | 150 |
| W32/Valla | | 0.27% | 122 |
| W32/Swen | | 0.26% | 119 |
| W32/Sober | | 0.24% | 108 |
| W32/Mimail | | 0.24% | 107 |
| W32/Mota | | 0.17% | 75 |
| VBS/Redlof | | 0.17% | 76 |
| W32/Fizzer | | 0.12% | 52 |
| W32/Yaha | | 0.11% | 51 |
| W32/Sobig | | 0.09% | 41 |
| W95/Tenrobot | | 0.06% | 27 |
| W32/Lovelorn | | 0.06% | 25 |
| W32/Hybris | | 0.06% | 28 |
| W32/Maslan | | 0.06% | 26 |
| W32/Tenga | | 0.06% | 8573 |
| W32/Kriz | | 0.05% | 22 |
| W32/Nachi | | 0.05% | 21 |
| W32/BadTrans | | 0.04% | 18 |
| W32/Elkern | | 0.04% | 19 |
| W32/Magistr | | 0.04% | 19 |
| W95/Dupator | | 0.04% | 16 |
| XM/Laroux | | 0.04% | 16 |
| W32/Randex | | 0.04% | 17 |
| W95/Spaces | | 0.04% | 18 |
| W32/Nimda | | 0.03% | 12 |
| W32/Myfip | | 0.03% | 12 |
| W32/Plexus | | 0.03% | 12 |
| VBS/LoveLetter | | 0.02% | 8 |
| Mumu | | 0.02% | 7 |
| W32/Ganda | | 0.02% | 11 |
| W95/CIH | | 0.02% | 8 |
| W32/Gaobot | | 0.02% | 9 |
| VBS/Psyme | | 0.02% | 10 |
| JS/Fortnight | | 0.02% | 7 |
| W32/Antinny | | 0.02% | 7 |
| AntiCMOS | | 0.02% | 11 |
| W32/Tecata | | 0.02% | 9 |
| W97M/Ethan | | 0.01% | 3 |
| Class | | 0.01% | 3 |
| W32/Wukill | | 0.01% | 5 |
| VBS/Soraci | | 0.01% | 3 |
| W32/Traxg | | 0.01% | 4 |
| W32/Korgo | | 0.01% | 6 |
| Cap | | 0.01% | 4 |
| Hiac | | 0.01% | 3 |
| W32/Sdbot | | 0.01% | 3 |
| W32/Buchon | | 0.01% | 4 |
| W32/Lovsan | | 0.01% | 4 |
| W32/Sasser | | 0.01% | 6 |
| Sic | | 0.01% | 4 |
| Win32/Bube | | 0.01% | 5 |
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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