| Virus Name | Prevalence | Percentage | Instances |
|---|---|---|---|
| W32/Opaserv |   | 38.42% | 3473 |
| W32/Klez | | 32.43% | 2932 |
| W32/Yaha | | 7.51% | 679 |
| W95/Dupator | | 4.26% | 385 |
| W32/Bugbear | | 2.88% | 260 |
| W32/Lirva | | 2.53% | 229 |
| W32/Funlove | | 2.11% | 191 |
| W32/Sobig | | 1.73% | 156 |
| W32/Magistr | | 1.62% | 146 |
| W32/Gibe | | 1.5% | 136 |
| W95/Spaces | | 1.33% | 120 |
| W32/SirCam | | 0.49% | 44 |
| W32/Hybris | | 0.45% | 41 |
| W32/BadTrans | | 0.39% | 35 |
| W32/Nimda | | 0.35% | 32 |
| W95/Lorez | | 0.32% | 29 |
| W95/CIH | | 0.28% | 25 |
| W32/Lovgate | | 0.12% | 11 |
| VBS/Redlof | | 0.12% | 11 |
| W32/Kriz | | 0.11% | 10 |
| W32/Braid | | 0.09% | 8 |
| W32/Parite | | 0.09% | 8 |
| W32/MTX | | 0.08% | 7 |
| W32/Elkern | | 0.04% | 4 |
| JS/Kak | | 0.04% | 4 |
| W32/Frethem | | 0.04% | 4 |
| W32/Cabanas | | 0.03% | 3 |
| W95/Bumble | | 0.03% | 3 |
| TPE | | 0.03% | 3 |
| W95/Weird | | 0.03% | 3 |
| W32/SQLSlammer | | 0.03% | 3 |
| W32/Datom | | 0.03% | 3 |
| SQL/Slammer | | 0.03% | 3 |
| AntiCMOS | | 0.03% | 3 |
| W32/Stator | | 0.02% | 2 |
| W97M/Marker | | 0.02% | 2 |
| W32/Hantaner | | 0.02% | 2 |
| Linux/OSF | | 0.02% | 2 |
| Chack | | 0.01% | 1 |
| Titch | | 0.01% | 1 |
| Class | | 0.01% | 1 |
| AntiEXE | | 0.01% | 1 |
| W32/Tarnger | | 0.01% | 1 |
| Barisadas | | 0.01% | 1 |
| W32/Aliz | | 0.01% | 1 |
| W32/Steph | | 0.01% | 1 |
| W32/Surnova | | 0.01% | 1 |
| W32/Pepex | | 0.01% | 1 |
| Stealth_Boot | | 0.01% | 1 |
| W32/Oror | | 0.01% | 1 |
| W32/QAZ | | 0.01% | 1 |
| W32/Maax | | 0.01% | 1 |
| W95/Whog | | 0.01% | 1 |
| W97M/Thus | | 0.01% | 1 |
| W32/Higuy | | 0.01% | 1 |
| W95/Kuang | | 0.01% | 1 |
| Myna | | 0.01% | 1 |
| W32/Lioten | | 0.01% | 1 |
| W32/Gemel | | 0.01% | 1 |
| W32/Kwbot | | 0.01% | 1 |
| W32/Ska | | 0.01% | 1 |
| Fly | | 0.01% | 1 |
| Twno | | 0.01% | 1 |
| JS/Fortnight | | 0.01% | 1 |
| W32/Bagif | | 0.01% | 1 |
| Killboot | | 0.01% | 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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