| Threat Alias | Number of Incidents |
| Troj/AdvHack-A [Sophos] | 105,937 |
| Backdoor.Tidserv!inf [Symantec] | 97,226 |
| Trojan:Win32/Alureon.BB [Microsoft] | 92,168 |
| DNSChanger.o [McAfee] | 80,085 |
| Trojan.Win32.Patched.dy [Kaspersky Lab] | 70,250 |
| Packed.Win32.PePatch [Ikarus] | 49,456 |
| Generic.dx [McAfee] | 47,394 |
| Trojan.Fakeavalert [Symantec] | 40,806 |
| Trojan.Patched.CL [Ikarus] | 34,844 |
| Trojan.FakeAlert [PC Tools] | 25,883 |
| Trojan.SillyWorm [PC Tools] | 23,604 |
| Trojan.Win32.Patched [Ikarus] | 20,232 |
| Generic BackDoor.t [McAfee] | 10,116 |
| Packed.Win32.PePatch.lb [Kaspersky Lab] | 8,711 |
| W32/Autorun-KO [Sophos] | 5,620 |
| Trojan.Patched.CK [Ikarus] | 4,496 |
| Trojan.Knowedel [Symantec] | 2,810 |
| Worm.Autorun.ABH [PC Tools] | 2,529 |
| Winfixer [McAfee] | 1,369 |
| TROJ_FAKEALRT.BK [Trend Micro] | 1,295 |
| Trojan:Win32/Tibs.ID [Microsoft] | 1,200 |
| Backdoor.Win32.Frauder.fc [Kaspersky Lab] | 1,161 |
| Mal/EncPk-EU [Sophos] | 1,034 |
| Trojan.TDSServ [PC Tools] | 843 |
| Trojan-Downloader.Exchanger.Gen.2 [Ikarus] | 820 |
| Trojan:Win32/Tibs.gen!lds [Microsoft] | 708 |
| not-a-virus:FraudTool.Win32.SpywarePreventer.u [Kaspersky Lab] | 582 |
| not-a-virus:FraudTool.Win32.UltimateAntivirus.cf [Kaspersky Lab] | 582 |
| Mal/EncPk-EU, Mal/Dorf-E [Sophos] | 540 |
| Virus.Win32.Tipa [Ikarus] | 540 |
| Trojan.Win32.Tibs [Ikarus] | 539 |
| Troj/FakeAle-LT [Sophos] | 483 |
| Trojan-Downloader.Win32.FraudLoad.dmv [Kaspersky Lab] | 483 |
| BKDR_FRAUDER.PB [Trend Micro] | 420 |
| W32/Nuwar.worm [McAfee] | 420 |
| WORM_NUWAR.AC [Trend Micro] | 420 |
| New Malware.ag [McAfee] | 400 |
| Generic FakeAlert.a [McAfee] | 357 |
| Generic PUP.z [McAfee] | 292 |
| TrojanDownloader:Win32/Renos.DG [Microsoft] | 291 |
| Mal/Dorf-E [Sophos] | 290 |
| Program:Win32/FakeSecSen [Microsoft] | 286 |
| Mal/Generic-A [Sophos] | 284 |
| Trojan:Win32/Tibs.IG [Microsoft] | 270 |
| Mal/FakeAV-F [Sophos] | 257 |
| Troj/FakeAV-DE [Sophos] | 253 |
| Mal/FakeVir-E [Sophos] | 250 |
| FakeAlert-AH [McAfee] | 247 |
| TROJ_ZLOB.EXT [Trend Micro] | 246 |
| TROJ_FAKEALE.AQ [Trend Micro] | 242 |
| TROJ_FAKEALER.GI [Trend Micro] | 242 |
| Downloader.gen.a [McAfee] | 218 |
| Generic Downloader.x [McAfee] | 165 |
| Trojan.Win32.BHO.geh [Kaspersky Lab] | 143 |
| TrojanDropper:Win32/Nuwar [Microsoft] | 140 |
| not-a-virus:FraudTool.Win32.XPAntivirus.ho [Kaspersky Lab] | 111 |
| Trojan.Zlob [Symantec] | 104 |
| not-a-virus:FraudTool.Win32.Agent.cd [Kaspersky Lab] | 90 |
| Troj/FakeAle-FJ [Sophos] | 90 |
| Trojan-Downloader.Win32.Agent.aigp [Kaspersky Lab] | 82 |
| Generic.Win32.Malware.FakeAlert.N [Ikarus] | 81 |
| TrojanDownloader:Win32/Renos.DU [Microsoft] | 78 |
| Troj/FakeAle-GY [Sophos] | 76 |
| Mal/Padodor-B [Sophos] | 75 |
| Troj/FakeAv-V [Sophos] | 74 |
| TROJ_RENOS.UY [Trend Micro] | 72 |
| Backdoor.Win32.Frauder.in [Kaspersky Lab] | 70 |
| TrojanDownloader:Win32/Renos [Microsoft] | 64 |
| Trojan-Downloader.Win32.FraudLoad [Ikarus] | 63 |
| Generic BackDoor [McAfee] | 62 |
| TROJ_FAKEAVALE.L [Trend Micro] | 56 |
| TROJ_RENOS.VA [Trend Micro] | 56 |
| TROJ_RENOS.VB [Trend Micro] | 56 |
| Trojan.Fakealert [Ikarus] | 56 |
| Hoax.Win32.Renos.fhv [Kaspersky Lab] | 49 |
| Backdoor.Win32.Frauder.io [Kaspersky Lab] | 48 |
| Troj/Istbar-DY [Sophos] | 42 |
| TROJ_DLOADER.KRK [Trend Micro] | 42 |
| Trojan-Downloader.Win32.BHO.qb [Kaspersky Lab] | 42 |
| Generic Dropper.bu [McAfee] | 41 |
| FakeAlert-AM [McAfee] | 40 |
| Generic PUP.x [McAfee] | 40 |
| Trojan.Win32.BHO.eya [Kaspersky Lab] | 40 |
| TSPY_FAKEAVALE.I [Trend Micro] | 40 |
| Trojan-Clicker.Win32.Klik [Ikarus] | 39 |
| Trojan-Downloader.Win32.FraudLoad.dxa [Kaspersky Lab] | 38 |
| Mal/Packer [Sophos] | 37 |
| TROJ_FAKEAVAL.AY [Trend Micro] | 36 |
| TROJ_RENOS.UZ [Trend Micro] | 36 |
| Trojan-Downloader.Win32.FraudLoad.vbyl [Kaspersky Lab] | 36 |
| Backdoor.Win32.Frauder.ip [Kaspersky Lab] | 35 |
| Backdoor.Win32.Small.ght [Kaspersky Lab] | 35 |
| Troj/FakeAle-JC [Sophos] | 30 |
| TROJ_FAKEAVAL.Z [Trend Micro] | 30 |
| Trojan.Win32.BHO.ggd [Kaspersky Lab] | 30 |
| Puper [McAfee] | 27 |
| TROJ_RENOS.UX [Trend Micro] | 27 |
| Trojan.Win32.BHO [Ikarus] | 26 |
| Mal/Agent-E [Sophos] | 25 |
| Troj/Small-EMJ [Sophos] | 25 |