Most of the people assume that having a good Antivirus software installed on their computer gives total 100% protection from different types of threats, virus, malware and spam.
Though this is correct till some extent but not 100%, you can protect your computer even WITHOUT ANY ANTIVIRUS if you browse internet, email, USB with responsibility and carefully.
Make sure you do not browse to any freeware AD sites, Do not open attachments and links from unknown email sender, do not connect unknown USB drives to your computer, etc.
Basically even if you implement best of the best product but you don’t know how to use it, then it won’t be valuable.
Below are the few Good and Well known Antivirus company who provide basic protection as free of cost. You can download and try it yourself.
I have installed this antivirus on many of our customers and works great without any issue.
If you need any help in installation, please feel to contact our support team anytime.