The ones looking at this will be China, Russia and their associates that don't care about (Western) law.
Let's not even bring project Echelon into this..
For higher-level people it really just isn't worth the risk, unless there's some incredibly valuable secret.
Actually, the French government intelligence agency is famous for IP theft. This one is placed at their feet.
If however, a completely separate company, perhaps in a different country, that has no business associations with Airbus in any manner, and there will never exists payments between Boeing and this company went through all of it would be no problem.
If a specific bigwig later on received among photos and videos, a steganographic encrypted document whilst visiting an anonymous sex site then read it and deleted it, nobody would ever know. (lest someone talks, always the human factor)
I made up all of the second paragraph. Companies specializing in what i described over to exist. They are not of course limited to ransomware leaks.
If you are under defense industry rules, viewing data is generally on a Need-To-Know basis. For any data that is classified, or CUI (Controlled Unclassified Information), EVEN IF that data becomes publicly available, it is illegal to view it.
Now, I'm sure if a headline came up in a Google search you wouldn't get busted, but if you go ahead and download it, that is at least putting your ability to continue working with classified/CUI at risk.
So yes, it's a hot potato which no one (smart) in the civilized democratic world will touch.
How to shoot yourself in the foot with bad management?
(On the other hand maybe some other company's board went through the docs, hmm)