I had encountered Shimomura once before, something he never found out. The previous year, in September 1993, after getting into Sun’s network, I had discovered that he had been finding and reporting security bugs he uncovered in SunOS, one of Sun’s flagship operating systems. I wanted the information, so I targeted his server. By hacking into a host called "euler" at the University of California, San Diego (UCSD), I was able to get root and install a network sniffer.