I'm using Bit Defender Antivirus 2008 on my Windows XP computer and it is completely up to date. Yesterday I clicked on a link from a Google search result - and the next thing I knew was that something was installed on my computer without my knowing. I'm not even sure what to call it - but it made changes to the system registry, changed Internet Explorer 7 settings, and disabled Task Manager without any notifications from Bit Defender as to what was going on (usually BitDefender pops up messages when registry changes are made when I install programs). I knew something was going on when I started to get bombarded by messages stating I had been attacked through a new icon in my system tray, a new yellow messagebar message in IE, a new IE toolbar, and various pop-up messages. The messages were telling me that I had been attacked and that I needed to install System Defender, Ultimate Cleaner, and /or Ultimate Defender anti-spyware on my computer. It also installed a dll called emlkdvo in the Windows folder. The worst part was when it activated active desktop and posted it's own bright red web page on my desktop - so any click on my desktop would bring me to one the anti-spyware sites. Knowing that these are not legitmate spyware products I commenced to find out what was going on and how to stop it. First thing I did was search your site for the things I knew - 'emlkdvo', 'Ultimate Defender', and 'System Defender'. But your site had nothing on them. I deleted emlkdvo.dll and got rid of all references to it in the registry on my own - but that had little affect. I purchased Webroot spy sweeper and that seemed to get rid of some of the issues - but it was Spyware Doctor from PC Tools that seems to have completely eradicated the problem (I found them by seaching on 'emlkdvo'). I'm still not sure what to call the thing that attacked me but Spyware doctor got rid of things called Trojan-Downloader.VB.AXA, RogueAntiSpyware.SystemDefender, and the like.
So why didn't Bit Defender stop this thing? Remember it changed registry settings and more without any Bit Defender pop up notifications!!