L enny and I wanted to get the source code for Digital Equipment Corporation’s VMS operating system so we could study it to find security flaws. We would also be able to look for developers’ comments about fixing security problems, which would let us work backward and figure out what those problems were and how we could exploit them. We also wanted to be able to compile parts of the operating system ourselves, so it would be easier for us to install some backdoor patches in the systems we compromised. Our plan was to launch a social-engineering attack on DEC to get into the VMS development cluster. I got the dial-up number for the VMS development modem pool.