Antivirus software is always recommended in a system to protect it against the viruses, spams, spywares and internet threats. Many strong antiviruses are available in the market and Mcafee is one among those who are very popular among users due to its strong firewall protection and security. Mcafee regularly scans the system and removes all the viruses present that may come through any external device or from internet etc. The antivirus always warns the user against any suspicious web sites before opening them.