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We  have studied  in  previous  classes  that  a  computer  functions  by  executing  a  set  of
                  instructions called a program. But some programs are created by programmers to stop
                  a computer from functioning properly. Such software that is harmful to the computer is

                  called malicious software. Let us now learn about malware and its types and also learn
                  to protect a computer from these threats.



                            MALWARE


                  Malware is a type of malicious program designed to damage or carry out other unwanted
                  actions on a computer system. In Spanish, 'mal' is a prefix meaning 'bad,' making the term
                  'badware,' which is a good way to remember it.

                  There are different types of malware programs that can affect the computer.



                           VIRUS


                  Virus stands for Vital Information Resources Under Seize. It is the kind of malware that is
                  created deliberately to damage critical information and data. It interferes with the normal
                  operation of a computer and attaches itself to any type of file. Due to this, when we copy a
                  file which has a virus, our computer gets infected. Before we know about it, our computer

                  starts malfunctioning, and our files and operating systems tend to get damaged.


                                                                                                          PURE
                      In 1986, the first virus 'Brain' was made by two brothers, Basit and Amjad Farooq
                      Alvi.                                                                                FACT



                  SYMPTOMS OF VIRUS
                  If a computer works differently from usual, it might have been infected by a virus. Some of
                  the symptoms of your computer having a virus are:


                      The computer runs slower than usual and takes more time to load programs.
                      The computer freezes frequently and stops responding.

                      Memory of the computer becomes lesser than expected and new files keep appearing
                      with strange names.

                      Warning messages like  “Your  PC is stoned”  appears  or unusual images  are
                      automatically displayed on the screen.

                      The operating system faces trouble in starting up, or the computer may shut down
                      unexpectedly.
                      Sometimes music and unusual sounds play automatically.




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