| Threat Alias | Number of Incidents |
| Infostealer.Gampass [Symantec] | 10,951 |
| Trojan Horse [Symantec] | 9,880 |
| Generic.dx [McAfee] | 9,356 |
| Adware-Fastlook [McAfee] | 9,217 |
| Adware.PigSearch [Symantec] | 8,221 |
| Downloader.Timber [Ikarus] | 8,075 |
| Generic Downloader.x [McAfee] | 5,910 |
| Exploit.Win32.IMG-WMF.fk [Kaspersky Lab] | 5,851 |
| Trojan:Win32/Alureon.BB [Microsoft] | 5,576 |
| Trojan-Spy.Gampass!sd6 [PC Tools] | 5,238 |
| Trojan.Win32.Alureon [Ikarus] | 5,044 |
| Hacktool [Symantec] | 4,681 |
| Adware.PigSearch [PC Tools] | 4,482 |
| Troj/PWS-AXY [Sophos] | 4,472 |
| Trojan-Downloader.Win32.Small [Ikarus] | 4,401 |
| Trojan-Downloader.Agent!sd6 [PC Tools] | 4,333 |
| Generic PUP.x [McAfee] | 4,294 |
| Downloader [Symantec] | 4,104 |
| Infostealer [Symantec] | 4,039 |
| Trojan-Downloader.Small!sd6 [PC Tools] | 4,011 |
| Trojan:Win32/Abndog.A [Microsoft] | 3,827 |
| Downloader-BJN.sys [McAfee] | 3,825 |
| Trojan-Downloader.Win32.Small.xxh [Kaspersky Lab] | 3,825 |
| Generic.PWS.Games [Ikarus] | 3,801 |
| Trojan.Drondog [Symantec] | 3,781 |
| Exploit.Win32.IMG-WMF [Ikarus] | 3,772 |
| Trojan-Downloader.Win32.Agent.agzq [Kaspersky Lab] | 3,480 |
| Adware.PigSearch!sd6 [PC Tools] | 3,403 |
| Exploit.IMG-WMF!sd6 [PC Tools] | 3,094 |
| Virus.Win32.Virut.br [Ikarus] | 2,958 |
| PWS-Mmorpg.gen [McAfee] | 2,866 |
| Exploit.IMG-WMF [PC Tools] | 2,704 |
| Trojan.Zlob [Ikarus] | 2,467 |
| Trojan-Dropper.Agent [Ikarus] | 2,342 |
| Mal/PWS-Fam [Sophos] | 2,125 |
| Trojan-GameThief.Win32.MultiFirst [Ikarus] | 2,044 |
| Win-Trojan/ExploitTool.3740 [AhnLab] | 2,028 |
| Packed.Generic.181 [Symantec] | 1,974 |
| Generic PWS.y [McAfee] | 1,832 |
| Win-Trojan/Xema.variant [AhnLab] | 1,795 |
| not-a-virus:AdWare.Win32.Iebar.w [Kaspersky Lab] | 1,745 |
| Trojan-PWS.OnlineGames [PC Tools] | 1,592 |
| Generic.Onlinegames [Ikarus] | 1,579 |
| Adware:Win32/Zhongsou [Microsoft] | 1,496 |
| Generic Dropper.eb [McAfee] | 1,434 |
| Backdoor.Trojan [Symantec] | 1,407 |
| Trojan-GameThief.Win32.Magania.axbn [Kaspersky Lab] | 1,370 |
| Trojan-GameThief.Win32.Magania [Ikarus] | 1,313 |
| New Malware.aj [McAfee] | 1,298 |
| Trojan.Agent.lsass [Ikarus] | 1,247 |
| PWS:Win32/Lolyda.T [Microsoft] | 1,230 |
| PWS-OnlineGames.ek [McAfee] | 1,215 |
| Trojan-GameThief.Win32.Magania.gen [Kaspersky Lab] | 1,204 |
| Trojan-GameThief.Win32.MultiFirst.ad [Kaspersky Lab] | 1,125 |
| Troj/Rootkit-EM [Sophos] | 1,122 |
| Hacktool.Rootkit [Symantec] | 1,080 |
| AdWare.Timber [Ikarus] | 1,079 |
| Generic BackDoor [McAfee] | 988 |
| Win-Trojan/Agent.3584.DB [AhnLab] | 961 |
| Generic.dx!ui [McAfee] | 934 |
| Trojan-Spy.Banker [Ikarus] | 934 |
| Trojan.Fakeavalert [Symantec] | 876 |
| Trojan-GameThief.Win32.OnLineGames.trxn [Kaspersky Lab] | 841 |
| Trojan.Win32.Agent.cuxo [Kaspersky Lab] | 806 |
| Trojan.Win32.Agent [Ikarus] | 802 |
| Win32.SuspectCrc [Ikarus] | 775 |
| Infostealer.Onlinegame [Symantec] | 774 |
| Rootkit.Win32.Banker.b [Ikarus] | 770 |
| Trojan.Crypt [Ikarus] | 759 |
| Backdoor.Bifrose [Symantec] | 717 |
| Trojan.Popuper [PC Tools] | 686 |
| TrojanDownloader:Win32/Perkesh.gen!A [Microsoft] | 646 |
| Trojan.Zlob [Symantec] | 633 |
| Trojan-GameThief.Win32.MultiFirst.ah [Kaspersky Lab] | 612 |
| W32/AutoRun-ADF [Sophos] | 612 |
| Rootkit.Win32.Banker.b [Kaspersky Lab] | 594 |
| Worm.Win32.Downloader.yv [Kaspersky Lab] | 582 |
| Worm.Win32.AutoRun [Ikarus] | 577 |
| Trojan.Tool [Ikarus] | 570 |
| Rootkit.Win32.Small [Ikarus] | 563 |
| Trojan-Downloader.Win32.Agent.bexw [Kaspersky Lab] | 546 |
| Downloader.gen.a [McAfee] | 535 |
| Trojan-Downloader.Small [Ikarus] | 525 |
| Hacktool.Rootkit!sd6 [PC Tools] | 509 |
| Backdoor.Win32.Bifrose [Ikarus] | 487 |
| Keylog-Ardamax.dll [McAfee] | 484 |
| Trojan-PWS.Win32.LdPinch [Ikarus] | 483 |
| Infostealer.Bancos [Symantec] | 476 |
| Trojan:Win32/Glecia.gen!A [Microsoft] | 471 |
| Spyware.Ardakey [Symantec] | 470 |
| Trojan-PSW.Win32.LdPinch.afea [Kaspersky Lab] | 466 |
| Trojan:Win32/Insebro.C [Microsoft] | 461 |
| BackDoor-CEP [McAfee] | 458 |
| Suspicious.MH690 [Symantec] | 457 |
| Trojan.HTML.FakeScanti [Ikarus] | 454 |
| W32.SillyFDC [Symantec] | 452 |
| Trojan.Fakealert [Ikarus] | 446 |
| not-a-virus:FraudTool.Win32.WinAntiVirus.jy [Kaspersky Lab] | 441 |
| W32/Autorun.worm.gen [McAfee] | 439 |
| Generic Downloader.z [McAfee] | 425 |