Why Your PC Need Antivirus ?

If your PC is connected to the Internet to surf the web or send and receive email, you need antivirus protection. This applies whether you have a dial-up connection or a high-speed connection such as DSL or cable.

The very fact that it is connected to a public network, along with millions of other means that your PC is vulnerable. Is open to receiving thousands of small software programs that are designed for any damage, disrupt, or exploit your computer.

1. Protecting your computer against malicious intruders

Any time you receive a file from some other source on the web, there is a possibility that the file is "infected" with a virus or an attachment containing some adware or spyware. That applies to view web pages, and receiving emails. It also applies to the downloading of images, audio and video files.

Email attachments are particularly known to harbor viruses and malware. You receive a message that has an attachment attractive than double clicking on it. In doing so, it installs a small program that resides somewhere deep within your PC, ready to do what has been programmed to do - if the espionage and information about your computer habits, the abduction of your page startup and redirect to some other site, or aggravating ads for gambling sites or pornography.

Viruses that go far beyond. They are intentionally designed to run programs that damage important operating system files, and usually have some form of exploitation of their email program to send the message to hundreds of infected people in your contact list. So called "virus" - it spread like wildfire to thousands and even millions of computers.

Antivirus programs

Antivirus programs like Norton Antivirus 2006 was designed to do just what its name implies - to protect against viruses. They do this through a process of four parts. First, when the antivirus program is installed "clean" system. Each file on the hard disk is scanned to see if it is infected. When an infected file is found that is either "quarantined or deleted.

Secondly, the antivirus program is on call and automatically scans the new files, email or web page files that are downloaded or copied to your computer's memory. If any of these files are infected, your antivirus program is blocking the copy.

Third, you run your antivirus program regularly scans - usually every two or three days - the entire file system to ensure that infected files do not have automatic search.

And fourthly, the antivirus program has a system that updates automatically. Since new viruses are created every day, it is important to update the security system every day. Usually this is done automatically download and install updates to the virus descriptions.

2. The Protection Against Spyware

Spyware is a relatively new problem, compared to the PC owner. The point of spyware is the keystroke to monitor patterns and use this information for any commercial purpose or advertising. The spyware is usually installed with freeware such as music or a video sharing program. The user does not consent to the installation and often not even aware of it.

Some spyware programs are relatively harmless, but others can have a dramatic impact on your computer's performance - even bogging down completely.

Newer versions of antivirus software like Norton Antivirus 2006 Detect and remove spyware, keyloggers and other unwanted monitoring software. They also come with regular updates again to stop spyware infecting your computer.

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