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Computer Virus. 1.WHAT IS A COMPUTER VIRUS? A computer virus is simply ...
everything on a hard disk. 2.HOW DOES A COMPUTER GET VIRUS? ...
A Look Into The Computer Virus. A Look Into ... strains. A computer virus tears up
your hard drive and brings down your network. However, computer ...
safeguarding against computer virus. ... This does not necessarily come standard with
your computer, therefore you have to purchase virus software. ...
Truth And Lies About The Computer Virus. ... The virus crashes or ruins the infected
computer. A anti-virus company obtains a copy of the virus and studies it. ...
Computer Virus. ... With this being the case, it is very easy for a computer virus to
affect the system so some parts of the accessed files cannot be located. ...
Submitted by noshee80 on March 7, 2008
Category: Miscellaneous
Words: 2218 | Pages: 9
Views: 113
Popularity Rank: 84,592
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1. Definition:
A computer virus is a program that makes copies of itself and infects files. The technical definition of a computer virus is “a self-replicating piece of computer code that can partially or fully attach itself to files or applications, and can cause your computer to do something you don't want it to do”.
Computer viruses can spread to other computers and files whenever infected files are exchanged and disrupt those computers' normal operations. Several thousand computer viruses are known, and on average three to five new strains are discovered every day.
Computer viruses got their name from biological viruses. Like a biological virus is small, cannot exist without a host, and can be passed from human to human, computer viruses are also small, cannot exist without a host, and can be passed from computer to computer or from program to program.
2. How viruses spread:
They certainly don't float around in the air like some human viruses. Instead, like any other computer program, a human must create them. Infections spread from machine to machine, and from organization to organization, in a number of ways.
In order to infect a computer, a virus has to have the chance to execute its code. Viruses usually ensure that this happens by behaving like a parasite, i.e. by modifying another item so that the virus code is executed when the legitimate item is run or opened.
As long as the virus is active on the computer, it can copy itself to other files or disks that are accessed.
Viruses can be transmitted by:
Booting a PC from an infected medium.
Executing an infected program.
Opening an infected file.
Good vehicles for viruses include the parts of a disk which contain code executed whenever that disk is booted, and documents which contain macros executed whenever that document is opened with the relevant application.
The...
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