Turns out knowledge alone isn't enough. I mean the knowledge of how to build a nuke, a microprocessor, or a rocket that can go to Mars is public information, yet building them remains elusive for a lot of countries.
It turns out that they’ve really been able to keep the material sciences data under wraps. It is also really hard to reverse engineer from end products. Same with the C919.
you don't exactly need to hack a network drive when you can just hire the guy who came up with it