This months top 20 lists comes from the Kaspersky Security Network. Ranking is made up of the malicious programs, adware and potentially unwanted programs most frequently detected on users’ computers. As suspected, Conficker (also known as Kido, Downadup) topped the list.

Position	Change	Name
1	1	Net-Worm.Win32.Kido.ih
2	-1	Virus.Win32.Sality.aa
3	2	Trojan.Win32.Autoit.ci
4	4	Trojan-Downloader.Win32.VB.eql
5	2	Packed.Win32.Krap.g
6	0	Worm.Win32.AutoRun.dui
7	-4	Packed.Win32.Krap.b
8	-4	Packed.Win32.Black.a
9	New	Trojan-Dropper.Win32.Flystud.ko
10	5	Virus.Win32.Sality.z
11	1	Worm.Win32.Mabezat.b
12	-2	Virus.Win32.Alman.b
13	1	Worm.Win32.Autoit.ar
14	New	Trojan.JS.Agent.ty
15	2	Email-Worm.Win32.Brontok.q
16	3	Worm.Win32.Autoit.i
17	Return	Virus.Win32.VB.bu
18	New	Packed.Win32.Katusha.a
19	New	Trojan.Win32.RaMag.a
20	New	Trojan.Win32.Autoit.xp

Source: Kaspersky Lab

Tags: Conficker, Malware, statistics, top 20

Author: Christopher

Our listing of the top 10 malware threats for December 2008 provided by the Kaspersky Security Network.

1)   Virus.Win32.Sality.aa

2)   Packed.Win32.Krap.b

3)   Trojan-Downloader.Win32.VB.eql

4)   Worm.Win32.AutoRun.dui

5)   Trojan.HTML.Agent.ai

6)   Trojan-Downloader.WMA.GetCodec.c

7)   Virus.Win32.Alman.b

8)   Trojan.Win32.AutoIt.ci

9)   Packed.Win32.Black.a

10) Worm.Win32.AutoIt.ar

Source: Kaspersky Lab

Tags: Malware, statistics

Author: Christopher