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           ^2[3COMPUTER VIRUS"S - ^1[1A Brief Guide For Beginners.[0

                           ^5[2by ROD PASCOE.[0
                       ^2[5Author of Virus Buster.[0

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^2 Welcome to the annoying world of computer virus's.  For those of you
^2who do not fully know what a Computer Virus is, then let me explain.

^1 A  true computer virus is a program that hides itself away on a disk
^1or  other media.  Without the user of the computer being aware of it,
^1it copies itself around onto other disks.

^7 Contrary  to  popular  belief  virus's  CANNOT damage your computer.
^7They  can  however  damage  any  of  the  data  that  you have on the
^7computer.

^2 Basically  there  are  two  ways  to avoid virus's.  The first is to
^2write  protect  your  disks  and leave them write protected.  This is
^2alright for people who only use their computer for games playing etc.
^2but  for  the  other  users e.g.  the programmers etc.  then the only
^2alternative is to use a decent virus killer.

^1 There  are  basically  two types of Amiga virus.  The first and most
^1common of these is the bootblock virus.  The bootblock of the disk is
^1the first part of the disk to be read in when the disk is inserted at
^1the  workbench prompt.  If a virus has infected the bootblock then it
^1will be started upon booting.  The location of these virus's makes it
^1easy to recognise and kill them.

^7 The  second  type of virus is the link or file virus.  These virus's
^7attach  themselves  to  executable  files  and  are  activated when a
^7program is run.  This makes them much more harder to find.

^4 Virus  Buster  was  initially written to remove the BGS9 virus which
^4had infected most of the authors disks.  At this stage I only had the
^4virus killer VirusX, which although was very good in its time was not
^4able to recognise the BGS9 virus, so I wrote a small program in BASIC
^4to  remove  the  virus from a disk.  The program could not however at
^4this stage recognise it in memory.

^6 It  was  shortly  after  this  that  I decided to develop the killer
^6further.   I  added  the  check  for  memory  and added a custom user
^6interface.   I  also  ported  the  code over from AmigaBASIC to AMOS.
^6After  I  had  done  this, I enlisted the aid of an assembly language
^6programmer  friend  of  mine  called  Peter Ivey who wrote me a small
^6program  to  read  a  bootblock from a disk.  This then enabled me to
^6check  for the more common Bootblock virus's as well as the BGS9 file
^6virus.   Since  then  Virus  Buster  (A nickname that caught on!) has
^6expanded and grown to the stage that you see now.

 
^3                       Happy Virus Killing !!
 

^2[4 For  details  of  how  you  can  contact  Rod  to send him any nasty[0
^2[4virus's, please turn to the adverts section.[0


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