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Viruses
Computer viruses are small software programs that are designed to spread from one computer to another.
and to interfere with the operations of your computer.
A virus might corrupt or delete data on your computer
Use your e-mail program to spread itself to other computers. or even erase everything on your hard disk.
There are two types of computer virus:
1-The Conventional virus
A conventional virus infects the floppy disk or hard disk of a computer.
It is found either is the System area or in the Program Files.
It will usually have the file extension .exe. which means it is an executable program.
2. Macro virus:
A Macro virus infects the data file created by particular software,
such as Microsoft Word or Microsoft Excel
This is a newer type of virus. and these incidences are increasing
A Macro virus will only begin to cause problems when the file containing that Macro is opened.
It is very important to install antivirus software on your computer.
but you should not believe that your computer is far away from danger merely by the presence of the protection programs
Email Attachments.
removable media
and downloads