[comp.sys.atari.st] Virus Protector

larserio@IFI.UIO.NO ("Lars-Erik sterud") (05/01/91)

As I do not have access to that many atari-archives I will post
this short (?) review of my newest program here and hope that some
og you will contact me and get the file and spread it for me....

Protect6 - Your way of protecting your system against viruses 
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
Protect6 is a small but powerful program that is resident in RAM
looking for bootsector and link-viruses.  It's easy to install
(just put it in the AUTO-folder on your boot disk) and easy to use.
Before you install it you should read this documentation and learn
to know the different messages, warning and questions you might get.
The program is tested, but you are using it at your own risk anyway.

Bootsector-viruses
""""""""""""""""""
Each time the system detect a new disk in drive A: Protect6 will
check this disk to see if it contains a bootsector-virus.

If the disk is allready immunized or if it is a MS-DOS disk you
won't notice anything, BUT if the disk IS auto-booting you will
get this message in the upper left corner of the screen:

	 Disk is Auto-Booting, Should I kill it ?
	 <here is the contents of the bootsector>
	 Call ABK-BBS +47 2 132659, 1200-9600 BPS

In the middle line the contents of the bootsector will scroll
by giving you a chance to decide if it's a virus or another
type of auto-boot (it could be an auto-starting game etc...)

If you decide to KILL and IMMUNIZE the disk press Y for YES,
if you DON'T want to CHANGE the bootsector press N for NO.

If you decided to kill the disk or if Protect6 find a disk that
is not auto-booting, but isn't immunized either, it will try to
immunize the disk and you will see this message on the screen:

	Killing and Protecting disk in drive A:

If everything went well the message will dissappear and the screen
will be redrawn and control returned to the active program/desktop.

If the disk in A: is write-protected you will get this message:

	Disk is Write-Protected, Try once more ?

If you still want to KILL and IMMUNIZE the disk you should REMOVE
the WRITE-PROTECT tab and press Y for YES, if you have changed your
mind and want to KEEP the DISK as it is just press N for NO.

All disks immunized by Protect6 are auto-booting and readable on
MS-DOS and PC-DOS systemes (IBM's) and contain an info-text.

Link-viruses
""""""""""""
This is a very nasty kind of virus that contaminates program files
and spreads like fire on harddisks.  Protect6 hooks on to the OS-
routines and gives an alert if a program tries to modify another
program (this is the way all known link-viruses spread):

	Program is trying to modify FILENAME.PRG
	Any key to modify file, Reset to Abort !
	Call ABK-BBS +47 2 132659, 1200-9600 BPS

FILENAME.PRG is replaced by the name of the program that will be
modified.  If this is OK just press ANY KEY (some programs store
their configuration data this way), BUT if the program currently
running is NOT supposed to MODIFY the indicated file you should
write down the name of the program running and press RESET.

When the system has rebooted you should examine and if possible
remove the program that tried to modify another program.  If you
have an older (hopefully non-contaminated) backup you should copy
this on to the disk and see if the problem dissappear.

 Lars-Erik  /  ABK-BBS +47 2132659  /   ____ ______ ________________________
  Osterud  /  larserio@ifi.uio.no  /   /___    /            The norwegian ST
__________/ ______________________/   ____/   /   Klubben,  user association


 Lars-Erik  /  ABK-BBS +47 2132659  /   ____ ______ ________________________
  Osterud  /  larserio@ifi.uio.no  /   /___    /            The norwegian ST
__________/ ______________________/   ____/   /   Klubben,  user association