I shouldn't use the word "leak". For that, I apologize.
Given that the US spies its own citizens and hacks into its allies' network to spy on them (Snowden?), it's not a stretch to assume that the US hacks into China's network either. Thus, labeling it a battle is appropriate.
It's hard to believe that the US would sit and do nothing when someone is attacking them and damaging its national interests. No one would do that, let alone someone with the kinds of capabilities of the US.
No apology needed, and I knew what you meant, a leak implies intent to spread information, and I don't think anyone was intending to do that.
R they sloppy, is security loose, well look at Mrs. Clinton, you'd have to call that either arrogance, or ignorance???