There is probably non, but that is not a point civilians are entitled to argue about unlike in the west. In China, like it or not, the military security principle isSo what security breach is there?
一、 不该说的秘密，绝对不说；Don't speak what you are not authorized to.
二、 不该问的秘密，绝对不问；Don't ask what you are not authorized to.
三、 不该看的秘密，绝对不看；Don't look at what you are not authorized to.
These principle items are the first thing you would be told in your military training in college, almost every college student does. Basically, if the PLA does not promptly tell you, show you and instruct you to reveal, they can ban anything you do.