| position | virus | percentage by occurrence |
|---|---|---|
| 1 | I-Worm.Sircam | 53.5 % |
| 2 | I-Worm.Hybris.b | 18.5% |
| 3 | I-Worm.Nimda | 3.6% |
| 4 | I-Worm.Magistr | 2.6% |
| 5 | I-Worm.HappyTime | 1.3% |
| 6 | JS.Trojan.Seeker-based | 1.2% |
| 7 | I-Worm.Magistr.b | 1.1% |
| 8 | Worm.Hai | 0.7% |
| 9 | 0.4% | |
| 10 | 0.3% | |
| 11 | I-Worm.MTX | 0.3% |
| 12 | Trojan.PSW.Unite.d | 0.3% |
| 13 | 0.3% | |
| 14 | 0.2% | |
| 15 | Backdoor.IRC.Critical | 0.2% |
| 16 | 0.2% | |
| 17 | Trojan.PSW.Coced.236.e | 0.2% |
| 18 | PS-MPC-based | 0.2% |
| 19 | 0.2% | |
| 20 | Macro.Office.Toraja.b | 0.2% |
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