Free Antivirus
Sounds to good to be true right.
Well there are actually a few company’s offering free anti virus solutions.
Usually they offer a basic program with the option to upgrade to their pro version.
Most of the free programs use an annoying popup or flashing red alert for the pro version.
A few examples are Avg
Avira
Avast
Here is an interesting article with links to download the program of your choice.
I personally like Microsoft security essentials.