| Virus Name | Prevalence | Percentage | Instances |
|---|---|---|---|
| W32/Netsky |   | 54.32% | 47485 |
| W32/Bagle | | 22.25% | 19451 |
| W32/Sober | | 15.75% | 13765 |
| W32/Mydoom | | 1.6% | 1397 |
| W32/Bagz | | 1.59% | 1389 |
| W32/Zafi | | 0.89% | 782 |
| W32/Dumaru | | 0.65% | 570 |
| W32/Klez | | 0.41% | 362 |
| W32/Mabutu | | 0.37% | 327 |
| W32/Lovgate | | 0.25% | 217 |
| W32/Funlove | | 0.24% | 210 |
| W32/Bugbear | | 0.2% | 171 |
| W32/MyWife | | 0.17% | 147 |
| W32/Valla | | 0.16% | 140 |
| W32/Mimail | | 0.12% | 102 |
| W32/Swen | | 0.09% | 80 |
| VBS/Redlof | | 0.09% | 77 |
| W32/Pate | | 0.09% | 80 |
| W32/Fizzer | | 0.08% | 71 |
| W32/Mota | | 0.08% | 67 |
| W95/Tenrobot | | 0.07% | 62 |
| W32/Yaha | | 0.06% | 55 |
| W95/Spaces | | 0.05% | 40 |
| W32/Sobig | | 0.04% | 39 |
| W32/Hybris | | 0.04% | 37 |
| W32/BadTrans | | 0.03% | 26 |
| W32/Magistr | | 0.03% | 27 |
| W32/Kriz | | 0.02% | 20 |
| W32/Nachi | | 0.02% | 14 |
| W32/Plexus | | 0.02% | 15 |
| W32/Buchon | | 0.02% | 14 |
| VBS/LoveLetter | | 0.01% | 9 |
| W32/Elkern | | 0.01% | 5 |
| Mumu | | 0.01% | 5 |
| W32/Nimda | | 0.01% | 10 |
| W32/Lovelorn | | 0.01% | 5 |
| W32/Korgo | | 0.01% | 5 |
| W32/SirCam | | 0.01% | 6 |
| W32/Chir | | 0.01% | 9 |
| W32/Ganda | | 0.01% | 8 |
| W95/CIH | | 0.01% | 10 |
| W32/Gaobot | | 0.01% | 12 |
| W97M/Ethan | | 0% | 2 |
| Internal | | 0% | 1 |
| Netlog | | 0% | 1 |
| W32/Wukill | | 0% | 2 |
| Form | | 0% | 1 |
| W32/Aliz | | 0% | 1 |
| W97M/Marker | | 0% | 2 |
| VBS/Soraci | | 0% | 2 |
| Melissa | | 0% | 1 |
| WYX | | 0% | 2 |
| W32/Fbound | | 0% | 1 |
| W32/Mofei | | 0% | 1 |
| W32/MTX | | 0% | 1 |
| Hope | | 0% | 1 |
| W32/QAZ | | 0% | 1 |
| Cap | | 0% | 1 |
| Cascade | | 0% | 2 |
| W97M/Thus | | 0% | 1 |
| W32/Frethem | | 0% | 1 |
| W32/Torvil | | 0% | 2 |
| W32/Randex | | 0% | 3 |
| Opey | | 0% | 2 |
| Toraja | | 0% | 1 |
| Gaggle | | 0% | 1 |
| W32/Sdbot | | 0% | 1 |
| Bablas | | 0% | 1 |
| W32/Evaman | | 0% | 1 |
| W32/Sasser | | 0% | 1 |
| W32/SQLSlammer | | 0% | 1 |
| VBS/Psyme | | 0% | 3 |
| Sic | | 0% | 3 |
| Tristate | | 0% | 2 |
| W32/Antinny | | 0% | 1 |
| AntiCMOS | | 0% | 1 |
| W32/Tecata | | 0% | 1 |
| VBS/Gedza | | 0% | 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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