Computer Viruses

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Term Paper Title	Computer Viruses
# of Words	1194
# of Pages (250 words per page double spaced)	4.78

Computer Viruses

Computer Viruses

                                        (anonymous)

WHAT IS A COMPUTER VIRUS:

       The term usually used to define a computer virus is:
       ' A computer virus is often malicious software which
          replicates itself'
                    [ Podell 1987 for similar definition ]

       - COMPUTER VIRUSES ARE BASICALLY PROGRAMS, LIKE A
         SPREADSHEET OR A WORD PROCESSOR.
       - PROGRAMS WHICH CAN INSERT EXECUTABLE COPIES OF ITSELF INTO
         OTHER PROGRAMS.
       - PROGRAMS THAT MANIPULATES PROGRAMS, MODIFIES OTHER
         PROGRAMS AND REPRODUCE ITSELF IN THE PROCESS.

       However, " computer virus " is just another name for a class
       of programs.  They can do anything that another program can.
       The only distinguishing characteristic is the program has
       ability to reproduce and infect other programs.

WHAT KIND OF PROGRAM ARE CHARACTERIZED AS A VIRUS PROGRAM:

       - PROGRAM WHICH HAS CAPABILITY TO EXECUTE THE MODIFICATION
         ON A NUMBER OF PROGRAMS.
       - CAPABILITY TO RECOGNIZE A MODIFICATION PERFORMED ON A
         PROGRAM.(THE ABILITY TO PREVENT FURTHER MODIFICATION OF
                         THE SAME PROGRAM UPON SUCH RECONDITION.)
       - MODIFIED SOFTWARE ASSUME ATTRIBUTES 1 TO 4.

HOW DOES A VIRUS SPREAD:
       A computer virus can only be put into your system either by
       yourself or someone else.  One way in which a virus can be
       put into your computer is via a Trojan Horse.

       -TROJAN HORSE IS USUALLY CONTAMINATED IN DISKS WHICH ARE
        PARTICULARY PIRATED COPIES OF SOFTWARE.  IT IS SIMPLY A
        DAMAGING PROGRAM DISGUISED AS AN INNOCENT ONE.  MANY
        VIRUSES MAYBE HIDDEN IN IT, BUT T.H. THEMSELVES DO NOT
        HAVE THE ABILITY TO REPLICATE.

        Viruses also can be spread through a Wide Area network
        (WAN) or a Local Area Network (LAN) by telephone line.
        For example down loading a file from a local BBS.

       BBS(bulletin board system)-AN Electronic mailbox that user
       can access to send or receive massages.

       However, there seems to be countless numbers of ways to
       become infected.  Every-time you down loads a program from
       somewhere or borrowed a disk from a friend, you are taking
       a risk of getting infected.

DAMAGES AND SIGNS OF INFECTION:

      a.> Fill Up your P.C. with Garbage:
      As a virus reproduces, it takes up space.  This space cannot
      be used by the...

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