As Blackcat has recently started a review series (it is a series, right? ) about lesser known AV solutions, I just want to add one part to this. Bitdefender is one of the lesser known AV solutions, but nevertheless has received some attention at this forum. Somebody mentioned some time ago that they provide a free version of their latest v7 release. That is true; however it installs a few always running components (communications server etc.) despite the fact that it is an on-demand scanner only. Bitdefender offers a free v7 scanner for DOS/Windows console, too. I have been using it for quite some time now and find it to be a very useful backup solution. So I decided to post a few general ideas of how to use it; feel free to add yours .