Two Top Twenties have been compiled from data provided by the Kaspersky Security Network in November 2008. The first Top Twenty is made up of those malicious programs most frequently detected on users’ computers by the 2009 antivirus products.
| Position |
Change in position |
Name |
| 1 |
3 |
Virus.Win32.Sality.aa |
| 2 |
0 |
Packed.Win32.Krap.b |
| 3 |
New |
Trojan-Downloader.WMA.GetCodec.c |
| 4 |
-1 |
Worm.Win32.AutoRun.dui |
| 5 |
3 |
Trojan-Downloader.Win32.VB.eql |
| 6 |
New |
Worm.Win32.AutoRun.rja |
| 7 |
0 |
Packed.Win32.Black.a |
| 8 |
New |
Exploit.JS.RealPlr.nn |
| 9 |
New |
Trojan-Downloader.JS.Tabletka.a |
| 10 |
-5 |
Trojan-Downloader.JS.IstBar.cx |
| 11 |
-1 |
Trojan.Win32.Agent.abt |
| 12 |
New |
Trojan-Downloader.Win32.Agent.anje |
| 13 |
2 |
Virus.Win32.VB.bu |
| 14 |
New |
Worm.Win32.Mabezat.b |
| 15 |
New |
Worm.Win32.AutoRun.eee |
| 16 |
0 |
Email-Worm.Win32.Brontok.q |
| 17 |
8 |
Virus.Win32.Alman.b |
| 18 |
-7 |
Worm.VBS.Autorun.r |
| 19 |
New |
Trojan-Downloader.JS.Iframe.yp |
| 20 |
New |
Trojan.Win32.Autoit.ci |