🚀 go-pugleaf

In article <1992Nov18.202710.9652@mcs.kent.edu> keithf@Nimitz.mcs.kent.edu (Keith Fuller) writes:

   I heard that early UNIX systems came with a Trojan Horse.
   As I remember, the C compiler would compile one of the utilities
   in a way that would give a knowledgable person entry into any UNIX
   system.

   Does anyone know anything about this?

This is described in "Reflections on Trusting Trust", the ACM Turing
Award lecture by Ken Thompson, which appeared in Communications  of
the ACM, Vol. 27 # 8, August 1984. This should be required reading for
every CS student.

   Like some other people who are asking such questions,
   I am indeed writing a term paper on UNIX security.

Look at:
Farrow, _Unix System Security_, Addison-Wesley 1991
Garfinkel and Spafford, _Practical Unix Security_, O'Reilly &
Associates, 1991.

Sufficient references in both to get you as deep into the literature
as you have time for. If you want to make your paper stand out, you
might want to actually implement some of the suggestions instead of
just digesting and restating.

-- Craig Presson