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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 the 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 carryout 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 shuts down unexpectedly.
               Sometimes music and unusual sounds play automatically.



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