The launch of the PDP-1 marked a radical shift in the philosophy of computer design: it is the first commercial computer that focuses on interaction with the user rather than just the efficient use of computer cycles [REF].
The first ever reference to malicious hacking is 'telephone hackers' in MIT's student newspaper, The Tech of hackers trying up the lines with Harvard, configuring the PDP-1 to make free calls, war dialing and accumulating large phone bills [REF].