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Computer Virus

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                         Learning Outcomes


                             What Is a Computer Virus?                       Types of Computer Virus

                             How Does a Computer Get Infected with a Virus?

                             How Do You Know Your PC Has a Virus?            How to Prevent Your PC from a Virus?
                             Malware                                         The Most Dangerous Malwares Known
                             Antivirus                                       Firewall




                 Data and information stored on a computer are the two most important assets of an organisation
                 or individual. No one wants to lose their data and information. Hence, people adopt preventive
                 measures to protect their computer systems and data from any kind of danger or risk. One of the
                 common risks is a virus attack.


                  i +  WHAT IS A COMPUTER VIRUS?

                 A computer virus is a type of unwanted computer program which is developed by miscreants
                 with  an  intention  to  infect  the  files  of  a  computer,  to  corrupt  a  database  or  to  hamper  the
                 functioning of a computer system.
                 In a computer system, virus does not evolve by itself, it is uploaded or injected in a network or into
                 a storage media. It is communicable i.e., it is transmitted from one computer to another computer
                 or to a network by some medium of transmission like CDs, pen drive, external hard disk, softwares,
                 internet connection, bluetooth, etc. When infected, many viruses replicate by themselves.

                 There are different types of viruses that infect specific components or specific functioning of a
                 computer system. They can range in severity. Some may cause mild damages while others can
                 severely damage hardware, software or files. VIRUS stands for Vital Information Resources Under
                 Seize.

                 Harms Caused by Computer Viruses

                 Different viruses will affect your computer in different ways.
                 •  They can crash your hard disk.



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