What Anti-Virus Software Does

Anti-virus software is one of the ways that users can make sure their computers are safe from external threats such as adware, spyware and malware. These are computer viruses, which slow down computers and can leak personal information to hackers. There are various things that anti-virus software can do in order to ensure computer and online file security.

One of the first things that anti-virus software does in order to ensure security is use a technique known as the virus dictionary. The virus dictionary is a list of all the known viruses that negatively affect computers, and when the anti-virus software is installed onto the computer it will scan all the files that are currently on it in order to spot any abnormalities. The system will then scan the program with the abnormalities against the dictionary of known viruses, in order to identify if there is a problem, and if so what this problem is. The software will then be able to deal with the problem in order to ensure that the computer remains safe.

Anti-virus software will also look for suspicious behaviour from programs that are already installed, and scan them in order to ascertain if they are infected with a virus. If this is the case, the software will then endeavour to cure the program of the infection. Once this process has been carried out, the program will run as normal and will no longer act suspiciously or negatively affect the running of the computer. The software will also regularly scan all the programs that are installed on the computer, even if there appears to be nothing wrong with them. This heightens the computer's security, as some viruses do not have obvious signs. It will also scan everything else on the computer not just the separately installed programs, but the ones that were on the computer when it was first developed and built. These parts on the computer may have been affected by alien software that has since become part of the computer.

Because anti-virus software has so many functions, it is the most efficient way to ensure computers against viruses and spyware. The software is available at most electrical software shops.

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