Each time you start your computer with an infected disk, the virus can spread Bug - A programming error in a software program that can have unwanted side effects such as security issues.

Client computer - A computer that runs a client program.

Upload - To send a file from one computer to another.

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When it comes to fighting viruses and other forms of infections that can cause damage to your computer or files it helps to know some terminology to keep yourself aware of what to look for when protecting your computer.

Here is a listing of common virus related words and terms that you can learn to help your understanding of how viruses work.

Download - To transfer data from one computer to another. Encrypted Virus - A virus that uses encryption to hide itself from virus scanners.

Exploit - A program or technique that takes advantage of a vulnerability in software to attack its host.

To manually update virus definitions download and run the apropriate file (32-bit or 64-bit) and follow the instructions.

The Norton Virus Definitions 64-bit allows manual update of your Norton Ant Virus and Norton Security in case that you do not have internet connection or in case auto update fails.Worm - A program that makes and distributes copies of itself.The Norton Virus Definitions allows manual update of your Norton Ant Virus and Norton Security in case that you do not have internet connection or in case auto update fails.Payload - The malicious activity that the virus performs to the host.Payload trigger - The condition that causes the virus to activate its payload.Port - An interface through which data are sent and received.