People who use Internet must use a good Internet program for their computer’s protection. The antivirus keeps away backdoor trojans and trojan horses and prevents computer from crashing. There are many antivirus programs in the market. My personal experience shows that Nortons Antivirus program provides excellent protection.
You can buy Nortons Antivirus from AntivirusWare at reasonable price. You download the software from their server or order a box copy. This antivirus comes with a 60-day Money Back Guarantee.
AntivirusWare is a Symantec Registered Partner and also sells Internet Security, System works, and Norton 360. They maintain a good informative blog and articles on their website.