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.
That sounds believable.
What's your overall take? do you think evidence was presented to confirm these systems were active around his tenure e.g. 2012? I'm maybe 20% confident they were active.