Virus’ attack is devastating. A couple of milliseconds after the virus infects your computer, your computer system environment will have been altered completely. You can no more gain total privilege to modify the system core of your computer because the virus has appropriated it. Everything that occurs on your computer is now under the virus control. Your computer will start acting erroneously, some of your important data are missing because the virus has hidden or even deleted them, and many other weird things that may occur when virus has nested in your computer system.

To prevent virus’ attack from occurring, there are several things that you must do. The most common action to deter any attack performed by a virus is installing antivirus software on your computer.

There are many antivirus applications that you can find on the internet and computer shops. You can either buy the paid version or download the free version. The paid version of antivirus obviously offers much more comprehensive protection and customer’s service so if you have enough money to afford it, you should consider buying it. However, that doesn’t mean that free antivirus program is not reliable. Although free antivirus offers less comprehensive protection, you can still depend on it to protect your computer if you can make sure that you can use your computer cautiously.

The caution of using your computer is actualized when you do several necessary actions to corroborate the antivirus protection. The most prevalent action is turning on your computer firewall so the system environment of your computer will always be free from any intrusion. You also need to scan every external storage device when you connect it to your computer. You also need to be cautious when opening a file or a folder because virus is often disguised as a harmless file or folder. If you open that fake file or folder, the virus will be activated and your free antivirus program will be unable to prevent its attack.

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