Last Sunday's episode advanced the plot but it also had a theme, how working in API/intelligence poisoned domestic relationships. Will was afraid Andie was talking to an enemy. Kale thought Walter planted a bug in their bedroom. Grant couldn't even ask Tonya over to the lunch table without screwing things up. Maggie is (consciously or unconsciously?) misusing her position in the community to force her ex-husband back out of her daughter's life.
API has numerous computers, rather large servers they seem to be too, all locked up in the basement. Yes, the paper files are supposed to be more secure. No, the human element makes them less secure, as Miles losing a file shows. But, that's part of why this show is so good, the contrast between the sloppy reality and the oh-so-terrifyingly-efficient ideal. The way Miles just gets a slap on the wrist for losing (!) a file in a taxicab or Tonya gets rehab shows how self-protection undercuts the supposed dedication to security.
By the way, the files withdrawn by Hadas suggest the original plot centered on oil, which means money. The team head who was cashiered for insider dealing may have been a forecast of what the Atlas McDowell operation is really doing, namely, manipulating events for profit. (Indirect in the case of Spangler, I'd guess, in the form of a board directorship. Speaking fees, too? That's a very common form of corruption.)