Antivirus software is a must in a computer. It protects from unwanted malware, spyware, virus etc. In this present time there are a lots of people who try to hack into your system by using different types of virus and steal your useful data or information. But Antivirus helps to protect your system from those virus. And an important thing to notice while installing is to make sure you use only GENUINE antivirus software. If you use PIRATED Software then it will itself put virus into your system and damage your system. Thank you.