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From: Doug Gwyn (VLD/VMB) 
Newsgroups: net.unix-wizards
Subject: Re:  Unix (In)Security
Message-ID: <7221@brl-tgr.ARPA>
Date: Fri, 11-Jan-85 09:27:30 EST
Article-I.D.: brl-tgr.7221
Posted: Fri Jan 11 09:27:30 1985
Date-Received: Sun, 13-Jan-85 08:19:47 EST
Sender: news@brl-tgr.ARPA
Organization: Ballistic Research Lab
Lines: 6

Multics may be the most secure O.S. in general use but it HAS
been broken into.  Details not available from this source.

The reason Multics might be more secure is that is has help
from special-purpose hardware.  It would not be feasible to
port Multics to a VAX, for instance.