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    4.   Your friend thinks his smartphone might be infected with spyware that tracks all his actions.
                               Which of the following can infect both Android and iOS devices?
                                      a.  Norton Antivirus                          b.  Emotet

                                      c.  Pegasus                                   d.  Storm Worm

                            Fill in the blanks with the correct words.

                                                     Hints Storm, Adware, Mydoom, Emotet

                            1.   An                     tracks user’s browser history and download history.

                            2.                       worm attacked millions of computers with an email about approaching
                               bad weather.
                            3.                       trojan horse spreads through spam emails to steal banking information.

                            4.                       worm scraped addresses from infected machines, then sent copies of
                               itself to those addresses.

                             Tick ( ) the correct statements and cross ( ) the wrong ones.

                            1.  A malware gets installed on a computer with the approval from the computer owner.

                            2.  A worm needs a program to get activated.

                            3.  Your computer gets infected by using infected pen drives.

                            4.  Antivirus can detect the virus in the computer.

                      Q     Answer the following questions:
                        A
                            1.  What is virus? Explain in detail.

                            2.  Write any four harms caused by a computer malware.

                                                                                         Safeguarding Your Computer    99

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