What Anti-Virus Software Consist of...

Most if not all Anti-virus software usually are designed so that they will identify,prevent and destroy pc viruses and other malicious programs(Malware).The most standard way by which an anti-virus software will accomplish this tasks mentioned earlier are by, Examining - this technique allows for the anti-virus program to scan some or all the files on your computer looking for similiar traces of viruses that matches signature definitions in it`s virus dictionary (virus definition database).

An anti-virus software should attempt to identify behaviors that are suspicious coming from files and programs installed on your computer.While doing this it will attempt to capture data, monitor your ports and many other things.Many of the commercial anti-virus software today will use both of the virus approaches, usually with strict emphasis on the virus dictionary also known as the virus definition database.

How does the virus dictionary / definition database approach work?

The anti-virus would look at files in your computer and compare suspicious virus files to files found in it`s definition database also known as virus dictionary.Once a suspicious file has been found and matches a particular virus in the software virus dictionary, the anti-virus software will take the following steps:

1.Attempts will be made to repair that file by removing the virus itself from the file.

2.The files will be quarantined (this simply means that the infected file will not be able to access other programs, files or documents), this definitely prevents the virus from spreading.

3.It may delete the infected file.Being able to protect your computer system on a short and long term basis, requires periodic downloads of virus dictionary files also called definition database files from the vendors website.Make sure you do this regularly. 

Computer users are continuously identifying new viruses "in the wild", they then send these infected files to anti-virus software authors.These anti-virus software authors who would now possess this information will then update their virus definition database or the virus dictionary, and then further go and release an updated version of the definition database file for you to download and update your personal anti-virus.Most dictionary based anti-virus software usually examines files on your computer whenever the computer OS(operating system) either opens, create or email files.

This technique allows for the anti-virus software to easily identify viruses on receipt.With this, system administrators can and should schedule periodic scans of all the files on the computer system on a regular basis.The antivirus dictionary approach is very effective in preventing virus outbreaks in right circumstances.Today`s anti-virus authors are being more proactive, they are developing anti-virus software that are,"poligomorphic," "polymorphic" and "metamorphic" because these viruses would encrypt or modify themselves so that when a scan of the system is initiated it will not find them.

Anti-virus softwares may vary depending on the methods they use to prevent viruses from infecting your computer, it is very important that you research and understand all the types before choosing one for your home or office.

If you don`t have an anti-virus program installed on your computer, you should purchase one right now otherwise you stand the chance of losing your data and spending lots of money.I personally recommend
Avast anti-virus  if you are going to buy an anti-virus software for your computer.

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