| Virus Name | Prevalence | Percentage | Instances |
|---|---|---|---|
| W32/Opaserv |   | 38.09% | 9064 |
| W32/Sobig | | 24.16% | 5749 |
| W32/Bugbear | | 7.56% | 1799 |
| W95/Dupator | | 7.09% | 1687 |
| W32/Klez | | 5.71% | 1360 |
| W32/Yaha | | 3.92% | 932 |
| W32/Funlove | | 2.24% | 532 |
| W32/Fizzer | | 1.94% | 462 |
| W95/Spaces | | 1.67% | 397 |
| JS/Fortnight | | 0.7% | 167 |
| W32/Kriz | | 0.6% | 142 |
| VBS/Redlof | | 0.55% | 131 |
| W32/Deborm | | 0.54% | 128 |
| W32/Ganda | | 0.53% | 125 |
| W32/Mofei | | 0.47% | 111 |
| W32/Gibe | | 0.43% | 102 |
| W32/Lovelorn | | 0.43% | 103 |
| W32/Magistr | | 0.4% | 96 |
| W32/Holar | | 0.3% | 71 |
| W32/Mylife | | 0.26% | 63 |
| W32/SirCam | | 0.24% | 57 |
| W32/Lovgate | | 0.23% | 55 |
| W32/Hybris | | 0.16% | 38 |
| W32/Nimda | | 0.14% | 34 |
| W95/Lorez | | 0.13% | 32 |
| W95/Whog | | 0.12% | 29 |
| Mumu | | 0.1% | 23 |
| W32/Parite | | 0.1% | 24 |
| W32/BadTrans | | 0.09% | 21 |
| XM/Laroux | | 0.08% | 20 |
| W32/Spybot | | 0.07% | 17 |
| W95/CIH | | 0.06% | 15 |
| W32/Elkern | | 0.05% | 13 |
| W95/Kuang | | 0.05% | 12 |
| VBS/LoveLetter | | 0.04% | 9 |
| W32/Valla | | 0.04% | 9 |
| W32/Goner | | 0.03% | 7 |
| W32/Cabanas | | 0.03% | 6 |
| W32/Lirva | | 0.03% | 8 |
| W32/Slanper | | 0.03% | 8 |
| W95/Bumble | | 0.03% | 6 |
| W32/Sdbot | | 0.03% | 8 |
| Divi | | 0.03% | 8 |
| W95/Bodgy | | 0.03% | 8 |
| W32/Deloder | | 0.03% | 7 |
| Netlog | | 0.02% | 5 |
| Form | | 0.02% | 4 |
| W32/Mapson | | 0.02% | 4 |
| W97M/Marker | | 0.02% | 5 |
| WYX | | 0.02% | 4 |
| W32/MTX | | 0.02% | 4 |
| W95/Ilmx | | 0.02% | 4 |
| W32/Winur | | 0.02% | 4 |
| W95/Fono | | 0.02% | 5 |
| VBS/Haptime | | 0.02% | 5 |
| W32/Datom | | 0.02% | 4 |
| W97M/Ethan | | 0.01% | 3 |
| W32/Randon | | 0.01% | 3 |
| Relax | | 0.01% | 2 |
| W32/Hantaner | | 0.01% | 2 |
| JS/Kak | | 0.01% | 3 |
| Cap | | 0.01% | 3 |
| W32/Frethem | | 0.01% | 3 |
| W32/Gruel | | 0.01% | 2 |
| W32/Auric | | 0.01% | 3 |
| W32/FBound | | 0.01% | 2 |
| Tristate | | 0.01% | 2 |
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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