If you haven't heard of Sophos antivirus, it's probably because you don't work for a large company. Unlike most other security software vendors, Sophos mostly sells to the corporate market and doesn't bother trying to sell copies to individual home users.

It does, though, give copies away. For free.

Yup. If you want to use the same antivirus software at home that big companies use, you can get it for free. Just head to the Sphos website and create an account (you'll need to supply a valid email address), and then you can access the Sophos online portal. From there, you can keep a watch on all the machines on which you've installed the software, and also download the installer.

The installation file runs to 192 MB, and you'll also need an internet connection so that the program can update itself once the main installation is complete. After that, you're protected from viruses and malware by a world-class software company.  Read More