Virus attacks can be prevented or overcome by using antivirus software. This type of software can also detect and remove computer viruses, provided the data base of viruses that are owned by the antivirus software already contains the code to remove the virus. Because it is very important to update your antivirus already we put on our computer. If not then in vain we plug in our computer antivirus because the virus is always up to date even always one step ahead of antivirus updates. Examples of viruses is a Worm, Trojan, Backdoor, hacking, etc.. Examples of reliable antivirus and counteract the virus is Kaspersky, AVG, AntiVir, PCMAV, Norton, Norman, and McAfee.

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