| Virus Name | Prevalence | Percentage | Instances |
|---|---|---|---|
| W32/Netsky |   | 74.35% | 148405 |
| W32/Bagle | | 21.19% | 42291 |
| W32/Bagz | | 0.67% | 1339 |
| W32/Zafi | | 0.57% | 1138 |
| W32/Mabutu | | 0.48% | 963 |
| W32/Funlove | | 0.47% | 930 |
| W32/Dumaru | | 0.42% | 842 |
| W32/Mydoom | | 0.34% | 686 |
| W32/Klez | | 0.25% | 495 |
| W32/Lovgate | | 0.18% | 364 |
| W32/Valla | | 0.16% | 312 |
| W32/Mimail | | 0.1% | 193 |
| W32/Bugbear | | 0.1% | 208 |
| W32/Swen | | 0.09% | 177 |
| W32/MyWife | | 0.08% | 161 |
| W32/Elkern | | 0.05% | 104 |
| VBS/Redlof | | 0.05% | 95 |
| W32/Parite | | 0.05% | 102 |
| W32/Fizzer | | 0.04% | 79 |
| W32/Mota | | 0.04% | 78 |
| W95/Spaces | | 0.04% | 71 |
| W32/Kriz | | 0.03% | 67 |
| W32/Hybris | | 0.03% | 59 |
| W32/Yaha | | 0.03% | 67 |
| W95/Tenrobot | | 0.02% | 33 |
| W32/Magistr | | 0.02% | 34 |
| W32/BadTrans | | 0.01% | 26 |
| W32/Sobig | | 0.01% | 17 |
| Mumu | | 0.01% | 12 |
| W32/Nimda | | 0.01% | 14 |
| W32/Lovelorn | | 0.01% | 10 |
| W32/Nachi | | 0.01% | 17 |
| W32/Chir | | 0.01% | 10 |
| W32/Plexus | | 0.01% | 25 |
| W32/Buchon | | 0.01% | 11 |
| W32/Evaman | | 0.01% | 23 |
| W95/CIH | | 0.01% | 11 |
| W32/Gaobot | | 0.01% | 10 |
| W97M/Ethan | | 0% | 3 |
| Internal | | 0% | 5 |
| Netlog | | 0% | 1 |
| VBS/LoveLetter | | 0% | 4 |
| Form | | 0% | 3 |
| W32/Braid | | 0% | 1 |
| W32/Sober | | 0% | 1 |
| W32/Darby | | 0% | 7 |
| W32/Aliz | | 0% | 2 |
| VBS/Soraci | | 0% | 3 |
| Junkie | | 0% | 1 |
| IEStart | | 0% | 1 |
| WYX | | 0% | 7 |
| JS/Kak | | 0% | 1 |
| W32/Funner | | 0% | 1 |
| W32/Mofei | | 0% | 2 |
| W32/Opaserv | | 0% | 4 |
| W32/MTX | | 0% | 3 |
| W32/Korgo | | 0% | 4 |
| Cap | | 0% | 1 |
| Cascade | | 0% | 1 |
| W32/SirCam | | 0% | 6 |
| W95/Dupator | | 0% | 1 |
| XM/Laroux | | 0% | 5 |
| W32/Torvil | | 0% | 8 |
| W32/Randex | | 0% | 5 |
| Opey | | 0% | 1 |
| W32/Ganda | | 0% | 9 |
| W32/Sdbot | | 0% | 1 |
| Krepper | | 0% | 1 |
| Bablas | | 0% | 1 |
| W32/Lovsan | | 0% | 9 |
| W32/Ska | | 0% | 2 |
| Freelinks | | 0% | 1 |
| W32/Sasser | | 0% | 5 |
| W32/SQLSlammer | | 0% | 2 |
| Divi | | 0% | 2 |
| Tristate | | 0% | 3 |
| JS/Fortnight | | 0% | 3 |
| W32/Antinny | | 0% | 4 |
| W95/Tecata | | 0% | 3 |
| W32/Pate | | 0% | 4 |
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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