Nowadays, the term of Computer Virus sound familiar for us. Every day we heard millions computer infected by a Computer virus, or a virus make Internet connection trouble, and many more. A computer virus is a computer program that can copy itself and infect a computer without authorization or knowledge of the computer user. Virus can destroy your data, damaging programs, steal important information, or reformatting the hard disk to make your computer completely useless.
If you ask how virus infects a computer, there's a many way to make it possible. A Floppy Disk, a CD, USB Flash Disk, Zip Drive or even Internet. Today, a virus able to infect a computer from Internet, or network services such World Wide Web, e-mail, Instant Messaging and file sharing systems. Some virus even no needs human action to spread itself. They able to use Operating System bug to infect a computer.
So, now you know what is a computer virus and want to prevent your computer from virus. Or maybe, your computer already infected by virus. Don't worry. I will help you for solve this problem.
First, install an anti virus program. If a computer virus is programmed to damage the computer, then an anti virus is programmed to prevent, destroy and heal your computer from virus. There's a many anti virus today. You can use Norton Antivirus, Kaspersky Antivirus, Panda Antivirus or AVG Antivirus. If you don't have an anti virus, then get one for you. Buy it from computer software store or download from Internet. And make sure to buy or download the latest release. And the most important things are make your anti virus definition up-to-date. Most of anti virus have an automatic update system. You only need to connect your computer to Internet and let them do it automatically. An up-to-date anti virus makes the anti virus know the latest virus and how to remove them.
If you connected to Internet, you need to install a firewall program. A firewall is a computer program designed and programmed to watch an Internet connection on your computer. And if there is an unusual action, they prevent the action. Or in other word, a firewall is a "police" to watch Internet and prevent "bad thing" do some action on your computer. You can use software-based firewall like Norton Internet Security, Zone Alarm and Trend Micro.
Always update your Operating System. There is no perfect Operating System, nor Windows, Linux or Macintosh. There are many bug on them. Usually, an Operating System vendor release a bug fix to patch the bug. So, you need to update your Operating System. Up-to-date Operating System also make your computer immune from another threats.
