From Matthew Rizos at http://remove-malware.com/

Avast Prevention Test Videos

Posted by malwarekilla

December 10, 2008

Last night I tested Avast Antivirus 4.8 Home against a few malicious URL's and Exe's and the results were less than perfect. Avast let a trojan install on the PC and then couldn't remove it once it was on. Later the PC was turned into a BOT and started sending SPAM (video 2).

Here are some facts on the test since I know I'll get questions:

The PC was clean

Latest Avast was loaded

The Avast VPS was updated minutes before the video

All shields were all turned on high

5-7 URLS were tested

1 trojan infection was confirmed

1 exe failed to elicit any response from Avast (silent malware/rootkit)

PC was turned into a spamming BOT

http://www.youtube.com/watch?v=iquamx6LY0w...on-test-videos/

Oh dear.

So there's at least one Trojan that Avast doesn't get, that's no surprise - no AV gets 100% of Trojans. That's why you should scan with more than one anti-malware app - and use caution when you're surfing.

Very wise advice by the greenknight, I use 3 additional Antimalware programs as second opinion scanners in addition to my Antivirus and believe me from personal expierence good surfing habits is a must or your system could be toast.