Who knows what kind of OS Calhoun used... Atsuro would be interested in it, if they have time.

"I agreed. Personally, I'm leaning towards someone with inside knowledge, since that would be more likely than an outsider figuring out how to get around Zero's security without any help." Difficult, bt not exactly impossible. This possible investigator would have to be very good to get this far. "Going from there, having inside knowledge would mean they're connected to this place or knows someone who do."

He sighed and looked up a bit. "If we have more info, it'd be easier to infer and speculate about this."