This is just a tiny little antivirus that won't eat up a lot of your space, it is compatible with Windows 7 so you got no problem there installing it and besides, it's got a 32 and 64-bit versions. One thing for sure that you will like about it is the fact that it is for free and I mean totally free. Here are the key features that Microsoft advertised.
- Comprehensive malware protection
- Simple, free download
- Automatic updates
- Easy to use