WHAT IS AN ANTIVIRUS ?

Antivirus software are programs which can detect , prevent and clean up computer viruses which may attempt to infect your computer system. It will scan downloaded files as well as your entire computer system in order to detect  the presence of an infection. Or in other words we can say An Antivirus is a protective software designed to defend your computer system against malicious software or malware  include viruses , Trojans, hijackers etc.The Antivirus software provide real time protection , which means antivirus program protect your computer system from incoming threats. The most antivirus programs have the ability to alert you when a program is trying to access your computer. If an antivirus software find an infected file that cannot be deleted , it can quarantine the file so that it cannot infect other files or programs on your computer  systems.