Backdoor Trojans, Rootkits and SPAM: Notes from the Microsoft Antimalware Team
The Microsoft AntiMalware team has recently published a paper discussing some of the data collected by their monthly AntiMalware tool.
A summary of the article is available on the SANS website, and the full article is available from Microsoft at the following link:
Here is one key quote from the article:
"Out of the 5.7 million computers cleaned, the MSRT has removed a backdoor Trojan from over 3.5 million (62%) of them.". "Bots, a sub-category of backdoor Trojans" ..... "represent a majority of the removals.". Rbot, Sdbot, and Gaobot "compose three of the top five slots in terms of total number of removals.".
And all that malware is fueling the SPAM problem that has been steadily increasing since the middle of 2006.