Here are some simple tricks that you can use to protect your
computer system from Viruses
1)
Use of Licensed Antivirus
2)
Method to install Antivirus.
4)
Disable Auto Run Option
5)
Operating System
6)
Never Use any Device without Scanning.
7)
Firewall

Use of Licensed Antivirus: Never use trail or Cracked version of any Antivirus Software because many of the features are not available with such antivirus and whenever a Virus attack occurs it simply report you and take no action.
How to Install Antivirus: This is the most important point that most of the
people miss to explain that what the correct way to install an Antivirus
Software is. Here are the simple rules:
a) Always install Antivirus on Freshly installed
Operating System Only.