A virus is a computer program that can replicate or copy ,itself to other files on the system .To protect computer from virus ,anti-virus software can used .To protecting computer from virus attacks,anti-virus software can detect and possibly remove all the know viruses from the file located destroyed by virus .Some of way to protect computer from virus are:----
*Installing anti-virus software
*Enabling the automatic virus-scanning feature
*Paying attention to all warning provided by the anti-virus software
*Ensuring that the latest version of anti-virus software install.
*Applying anti-virus updates on receiving notification of an anti-virus updated.These update contain information about new virus.After installing the software ,setting can be made in such a way that every time a user download web pages,they are scanned for virus.