Your answer sound correct, it is true that is not the first time that i heard stories about China attacks, nor the first attacks.
With more clarification, government will know that China is not the first factor of these kind of attacks, only a hijacked Axe to others.
Well, in your vision NSA security believe in old stories, attack/defense to stay at top.
I don't believe that China spy can attack into Canadian network, even i remark that all last governments attacks (French, NASA,...) come from China, is really china so good in Hacking. I thought often that China network is used as transparent proxy to others gov.