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07                   COMPUTER



                                                                        VIRUS



           Prime (Ver. 2.2)-VII Prime (Ver. 2.2)-VII                         Learning Objectives                                                                                                                                                        COMPUTER VIRUS





                                                                              •    What is a Computer Virus?
                                                                              •  Types of Computer Virus
                                                                              •    How does a Computer get Infected with
                                                                                Virus?
                                                                              •  How do you know your PC has a Virus?
                                                                              •    How to Prevent your Computer from a
                                                                                Virus?
          80                       Sometime,  my  saved  files  behave        •  Malware                                                                                                                                                              81
          80
                                 abnormaly and display errors. I even          •  Antivirus
                                 lost some data and information. What          •  Firewall

                                 can I do to save my computer from these problems?

                                  Data and information stored in the computer are the two most important

                                 assets for everyone. Hence, most of the people adapt preventive measures
                                 to protect their computer systems and data from any kind of danger or risk.

                                 One of the common risks is virus attack. Let me explain.


                     What is a Computer Virus?


                  A computer virus is a ‘piece of code’ or program developed to corrupt the data or program

                  files stored in the computer system. It enters to the computer without permission of the
                  user.  The user of the computer may not even realise that the computer is affected by a

                  virus. Viruses normally infect just one computer, however, if the computer is a part of a
                  network, then the computer virus may spread to other systems much like a human virus which

                  transmits from one person to another. After entering to the computer, they hampered the
                  normal  functioning  of  the  resources  of  computer  such  as  processing  power,  memory  and

                  installed programs. Sometime, a virus slows down the speed of computer or even damages the
                  hard disk of the computer completely which may not be recovered or repaired. VIRUS stands

                  for Vital Information Resources Under Seize.
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