A virus is a small piece of software that piggybacks on real programs. For example, a virus might attach itself to a program such as a spreadsheet program. Each time the spreadsheet program runs, the virus runs, too, and it has the chance to reproduce by attaching to other programs Courtesy: howstuffworks.com
a c program for creat a virus
The exceptions list that exists in many anti-virus programs allows you to specify 'exceptions' that the anti-virus program will overlook when scanning for viruses and monitoring suspicious activity. This can be useful if your anti-virus program is blocking a non-virus, stopping it from doing what it is supposed to be doing. For example, if your anti-virus program stopped the Google Chrome installer program from making changes to your computer you would want to create an exception - since the Chrome installer is a perfectly legitimate program that will not harm your computer.
Yes, "virus" can be used as a verb, particularly in computing contexts. It means to infect a computer system with a virus program that can replicate and spread to other computers. For example, "The malware virus spread quickly throughout the network."
A Trojan Horse virus program poses as some other program.
virus spreader
Free virus protection can be found on many online providers. An example of such is AVG Free. It is highly recommended for all computer users to use a anti-virus program.
A Companion virus
use the anti-virus program.
emulator is a program that allows a computer to emulate another program . This usually does not cause a virus
Generally, a computer virus attacks a file/program, and then injects a bunch of complex direction codes that make the program a zombie. So the virus basically kills and then mutates the code of a program, either making that infected program another copy of the virus that attacked it, or a powerhouse factory that automatically makes copies of the virus, which means that the program now is like a mass production factory making copy after copy after copy of the virus.
Stores the virus' program code that tells how to do everything the virus needs to do.