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Article #654

Re: IBM password

#654
From: Ed Carp
Date: Mon, 05 Oct 1992 18:31
18 lines
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Vesselin Bontchev (bontchev@fbihh.informatik.uni-hamburg.de) wrote:

: DEBUG can access the disk only as logical sectors, so in order to
: access it on a physical level, you'll have to write a short program,
: using INT 13h - the BIOS service, used to access the disk. However,
: people who know how to do that, usually don't ask why booting from a
: floppy can bypass the hard disk protection, so I'll describe an easier

You can also use such a program to erase one's hard disk.

The only security in this case is to physically remove the floppy drives from
the system.  In my secure testbed I have such a system which is connected
to other systems via serial port only, and it polls other systems for stuff.
-- 
Ed Carp, N7EKG     erc@apple.com                801/538-0177
"This is the final task I will ever give you, and it  goes  on  forever.   Act
happy, feel happy, be happy, without a reason in the world. Then you can love,
and do what you will."           -- Dan Millman, "Way Of The Peaceful Warrior"
Technical Details
Message-ID: <1992Oct5.183129.20500@unislc.uucp>
Path: arc1-ca.pugleaf.net!sparky!uunet!unislc!erc
References: <bontchev.717788387@fbihh>

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Newsgroups: comp.security.misc
Path: arc1-ca.pugleaf.net!sparky!uunet!unislc!erc
From: erc@unislc.uucp (Ed Carp)
Subject: Re: IBM password
X-Newsreader: TIN [version 1.1 PL6]
References: <bontchev.717788387@fbihh>
Message-ID: <1992Oct5.183129.20500@unislc.uucp>
Organization: Unisys Corporation SLC
Date: Mon, 5 Oct 1992 18:31:29 GMT
Lines: 18