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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 individuals
                  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 can be transmitted from one computer to another computer
                  or to a network by some communication medium like CDs, pen drive, external hard disk, softwares,
                  internet connection, bluetooth, etc. When a computer is infected, many viruses replicate 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 corrupt system files.
                  •  They can destroy all or some of your data.
                  •  They decrease the processing speed of the computer.


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