Page 30 - COMPUTER

 VIRUS 

A computer virus is a computer program which on copy it self and inject a computer without

our permission or knowledge of the user. It is a code computer program that attaches itself to
other program orders to their behavior often in a harmful way.

 SYMPTOMS 

• Programs may take long time to load.
• Accessing the disk take a long time.

• Strong or irrelevant error message appears on the screen.
• Original file may disrepair spread file may appear.
• Size of executable file change.

 EFFECT OF VIRUS 

❖ Corrupt file.
❖ Increase file size.
❖ Format the hard disk.
❖ Destroying data.
❖ Slow down the system
❖ Rename all the files with a single name.
❖ Make shortcuts itself.

 HOW DOSE VIRUS SPREAD 
A Virus Can Only Spread From One Computer To Another Computer When It’s
“Host Program Is Taken To The Infected Computer For Enhance By A User
reading Email And Removable Disk ,Cd, U.s.b., Pen Drive, Etc.

29