On 7 Jun 2001, at 22:32, Zachary Uram wrote:

> I never heard of any mainframes being cracked into. 

  I have -- but I wrote my first program in 1969, and first got paid 
to program in 1976.  Remote access wasn't all that common in those 
days, but most of the systems on the other end of the line were 
mainframes -- and a firewall was an explosive bolt to physically cut 
the connection to a remote site in an emergency.

David Gillett


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