Page 34 - iPlus_Ver_2.0_class_7
P. 34

i +   HOW TO PREVENT YOUR PC FROM A VIRUS?






                   •  Download only legal software.                  •  Don’t open any unknown e-mail.
                   •  Use the original version of Windows.           •  Don’t  open  any  e-mail  attachment  from
                   •  Scan Pen drive, CD and any other external         unknown sources.
                     storage  device for viruses before  opening  •  Don’t download music, program or games
                     in computer.                                       from unknown sources on the Internet.



                   i +   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 that means '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 in a similar way a
                  virus does. Some of them are the worm, trojan horse, spyware, ransomware, rootkit and backdoor.

                  Let us discuss these in detail.
                  Worms


                  Worms are the computer programs or algorithms which are alien to the host computer and
                  are designed to purposely slow down the functioning of a computer. Worms replicate inside
                  the system and thus occupy a huge memory space in the storage device. Worms spread more
                  commonly in computers that are connected on network.
                  Trojan Horse

                  Trojan horse is a dangerous virus. It represents itself as helpful software program. Once the user
                  clicks on it to agree to run it, it gains access to sensitive data and then modifies, blocks, or deletes

                  the data. It cannot copy itself from one computer to another.
                  Spyware

                  Spywares are programs which infect and  collect information of the computer  without  the
                  owner’s  knowledge  or  consent.  A  spyware  generally  infects  a  computer  system  by  getting
                  transmitted through internet, websites,
                                                                 Info Byte
                  webpages, e-mails or through network
                                                                 The  term  ‘trojan’  is  derived  from  the  Trojan
                  of computers. It intrudes into a
                                                                 Horse story in Greek mythology, which
                  computer and quietly steals the data of
                                                                 explains how the Greeks were able to enter the
                  the computer. In other words, it refers
                                                                 fortified city of Troy by hiding their soldiers in
                  to a kind of software which can track          a big wooden horse given to the Trojans as a
                  the activities of a computer system and        gift. The Trojans were very fond of horses and
                  report  to the users. Keylogger  is an         trusted the gift blindly. In the night, the soldiers
                  example of a spyware.                          emerged and attacked the city from inside.




                    32
                         iPlus (Ver. 2.0)-VII
   29   30   31   32   33   34   35   36   37   38   39