> He was a sysadmin who built a system
can you elaborate on this ? what were his responsibilities and what role did he have in setting up the system?
He seemed to imply that he helped deploy these systems (though he never authored them), but from his interviews & the evidence provided, I don't even think that was the case. I got the impression he was sort of a backup & storage manager.
Sysadmin with root who does some scripting. From memory it was something like a number of cron jobs to download from rss-like feeds to a central location, and maybe index them too. Show results on a web page.
Until that time it was difficult to get updates and folks were out of touch because info was too compartmentalized. Later something made him take a peek above his clearance, as the data was there.
He explained it in detail in the book Permanent Record, which is available at the library and/or ingested into a model by now.