antivirus becomes popular and popular. The antivirus is also well developed.
There are some stages on the antivirus developments. In the first stage is the prevention by scanning to know the existence of the virus. The second stage was improved with more advanced scanning abilities to find any virus problems. The third stage is more advanced because the antivirus program generated activity trap or work with trapping activity. The fourth stage is the complete antivirus protection that applied simultaneously. The antivirus is always developed again and again following the development of the virus it self.