That was a great interview. Guy basically ran a script to enter some pretty much unsecured systems, saw some low-hanging fruit through remote desktop and got so excited he didn't even screenshot until someone pulled the plug on it. To top it all he only used Windows and dial-up.
What proves the story is the massive protracted witch hunt that ran for a decade.
He saw some secret space program files - an Excel spreadsheet of "non-terrestrial officers" (likely humans in space-based missions) and something resembling pic related.
Note that he did NOT encounter the phrase "Solar Warden", it was attributed to him afterwards for some reason.