| Threat Alias | Number of Incidents |
| Infostealer [Symantec] | 5,514 |
| Trojan-GameThief.Win32.MultiFirst [Ikarus] | 4,352 |
| Mal/Generic-A [Sophos] | 3,117 |
| Trojan-PWS.OnlineGames [PC Tools] | 2,498 |
| PWS:Win32/Lolyda.T [Microsoft] | 2,433 |
| Generic PWS.y [McAfee] | 2,406 |
| Trojan-GameThief.Win32.MultiFirst.ad [Kaspersky Lab] | 2,115 |
| Trojan-GameThief.Win32.MultiFirst.ah [Kaspersky Lab] | 1,476 |
| Generic.dx [McAfee] | 698 |
| W32.SillyDC [Symantec] | 627 |
| Trojan-GameThief.Win32.MultiFirst.ae [Kaspersky Lab] | 580 |
| PWS:Win32/Lolyda.M [Microsoft] | 552 |
| PWS:Win32/OnLineGames.GC [Microsoft] | 521 |
| WORM_VBWORM.AC [Trend Micro] | 520 |
| Infostealer.Gampass [Symantec] | 500 |
| Trojan-PWS.Magania [PC Tools] | 423 |
| Virus.Win32.AutoRun.aim [Kaspersky Lab] | 420 |
| Trojan-GameThief.Win32.MultiFirst.ac [Kaspersky Lab] | 323 |
| PWS-Mmorpg.gen [McAfee] | 306 |
| Trojan-Spy.Gampass!sd6 [PC Tools] | 294 |
| PWS-OnlineGames.cz [McAfee] | 250 |
| TrojanClicker:Win32/Hatigh.C [Microsoft] | 240 |
| Mal/EncPk-KP [Sophos] | 230 |
| PWS.Win32.Lolyda [Ikarus] | 225 |
| W32/Autorun.worm.eb [McAfee] | 219 |
| Gen.Packed [Ikarus] | 210 |
| Trojan-GameThief.Win32.MultiFirst.al [Kaspersky Lab] | 210 |
| PWS-OnlineGames.cf [McAfee] | 208 |
| Trojan Horse [Symantec] | 201 |
| Trojan-GameThief.Win32.MultiFirst.w [Kaspersky Lab] | 196 |
| Packed.Generic.233 [Symantec] | 191 |
| Generic.dx!fml [McAfee] | 189 |
| Mal/Heuri-D [Sophos] | 167 |
| W32.SillyFDC [Symantec] | 134 |
| Backdoor.Win32.Agent.ruj [Kaspersky Lab] | 132 |
| Trojan-GameThief.Win32.MultiFirst.af [Kaspersky Lab] | 132 |
| Trojan-GameThief.Win32.MultiFirst.e [Kaspersky Lab] | 132 |
| Trojan-GameThief.Win32.MultiFirst.h [Kaspersky Lab] | 110 |
| W32.Lunalight@mm [Symantec] | 110 |
| Trojan.Renos.Gen!Pac.5 [PC Tools] | 107 |
| Trojan.Win32.SmallGame.a [Kaspersky Lab] | 100 |
| Trojan-GameThief.Win32.MultiFirst.y [Kaspersky Lab] | 100 |
| Mal/VB-F [Sophos] | 92 |
| Trojan-Downloader.VB.AXY [Ikarus] | 89 |
| WORM_MOONLIGHT.C [Trend Micro] | 86 |
| WORM_NUCRP.GEN [Trend Micro] | 86 |
| Email-Worm.Win32.VB.cp [Kaspersky Lab] | 82 |
| Win-Trojan/OnlineGameHack.7680.AQ [AhnLab] | 82 |
| Worm:Win32/Autorun.AW [Microsoft] | 80 |
| Worm.Win32.AutoRun.lk [Kaspersky Lab] | 78 |
| W32.Sality.X [Symantec] | 71 |
| Win32.Sality.AA [PC Tools] | 71 |
| W32/Sality.ac [McAfee] | 69 |
| Virus.Win32.Sality.s [Kaspersky Lab] | 68 |
| WORM_SALITY.BL [Trend Micro] | 67 |
| Infostealer.Hibik.A [Symantec] | 66 |
| Mal/Veneb-A [Sophos] | 66 |
| Worm.Win32.VB.wg [Kaspersky Lab] | 64 |
| New Malware.bc [McAfee] | 63 |
| Trojan-GameThief.Win32.MultiFirst.ab [Kaspersky Lab] | 63 |
| I-Worm.Moonlight.C [PC Tools] | 61 |
| Worm.Win32.VB [Ikarus] | 60 |
| Trojan-GameThief.Win32.MultiFirst.t [Kaspersky Lab] | 56 |
| Virus.Win32.AutoRun.aim [Ikarus] | 52 |
| Mal/Behav-109 [Sophos] | 50 |
| Trojan.Delf.AXGF [PC Tools] | 50 |
| Trojan-Clicker.Win32.Hatigh [Ikarus] | 50 |
| Backdoor.Trojan [Symantec] | 46 |
| Trojan-Downloader.Win32.Suurch.awk [Kaspersky Lab] | 45 |
| Exp/MS08067-A [Sophos] | 44 |
| Exploit.Win32.IMG-WMF.fk [Kaspersky Lab] | 44 |
| Worm.Win32.AutoRun [Ikarus] | 44 |
| W32/Virut.gen [McAfee] | 43 |
| Worm.Win32.VB.yk [Kaspersky Lab] | 43 |
| PWS.Win32 [Ikarus] | 42 |
| Trojan-GameThief.Win32.MultiFirst.aj [Kaspersky Lab] | 42 |
| Trojan-GameThief.Win32.MultiFirst.v [Kaspersky Lab] | 42 |
| Trojan.Ducky.B [Symantec] | 40 |
| Generic QHosts.b [McAfee] | 36 |
| Troj/PWS-AWQ [Sophos] | 36 |
| PWS.Win32.Lolyda.M [Ikarus] | 35 |
| Suspicious.MH690 [Symantec] | 35 |
| W32.Randex.gen [Symantec] | 35 |
| Win32.Virut.Gen.5 [PC Tools] | 33 |
| Troj/Keylog-JV [Sophos] | 32 |
| Backdoor.Win32.Poison.pg [Kaspersky Lab] | 31 |
| W32/Autorun.worm.h [McAfee] | 31 |
| Exploit.MS08-67 [PC Tools] | 30 |
| Trojan-GameThief.Win32.MultiFirst.ak [Kaspersky Lab] | 30 |
| Trojan-Spy.Hibik!sd6 [PC Tools] | 30 |
| Virus.Win32.Virut.q [Kaspersky Lab] | 30 |
| Trojan.DL.CKSPost.Gen [PC Tools] | 26 |
| Win32/Autorun.worm.69632 [AhnLab] | 26 |
| Win-Trojan/Xema.variant [AhnLab] | 26 |
| Worm.AutoRun!sd6 [PC Tools] | 26 |
| Trojan-GameThief.Win32.MultiFirst.x [Kaspersky Lab] | 25 |
| Win32.SuspectCrc [Ikarus] | 25 |
| W32/MoonLight.worm [McAfee] | 24 |
| Bloodhound.Unknown [Symantec] | 23 |
| Generic BackDoor [McAfee] | 23 |