The worst scenario any computer user can imagine is trying to access your files and the computer is unresponsive. Everyone fears the day when their computer will be infected with some kind of virus and all their files will be corrupted. At that point there isn’t a whole lot you can do. The best way to protect yourself against these threats is by prevention. There are so many different types of threats out there on the Internet that it is almost impossible to try and identify and eliminate individual threats yourself. You need to have the assistance of virus protection software.
Protection software comes in all different types and with many different features. However the goal of each one is the same: to protect your computer against malicious software and code. The way these antivirus programs go about this task is actually quite simple. The program will receive a list from its publishing company every day or at some other predetermined schedule. This list contains all known code and files that are malicious software. The antivirus software then looks at every piece of code that attempts to come into the computer. New files and code can come from all different places so this antivirus software analyzes threats from a variety of sources: from user input, coming off the internet, or even a file that is downloaded. There are also measures to protect against software that is not on this list. This could be brand new malware that has not yet been identified by the virus protection software publisher. The software will analyze the code to match it up with known malware as part of its typical security protocols. When the program does this and doesn’t have the code on its list, it has a few tests or procedures it can do to determine if the code is malicious. One thing it can do is look at different code fragments from the file and sees if they are close to or resembles any known malware code. If it does then there is a good chance the file you’re trying to bring onto your computer is malicious and the protection software will probably alert you and suggest you don’t open or download that file.
There are some decisions you have to make in regards to your virus protection software. The level to which you are protected will have some consequences on the speed and performance of your system. If you set the levels of protection to their maximum setting, the time you spend on your computer, particularly on the Internet will significantly increase. You have to decide the balance you want to strike between performance and protection.
The Free Computer Protection website has additional information you might find useful.