I'd say that market linkage in between China and USA in tech was just beginning to heal up after the credit crisis, but before that Chinese companies were rather wary of going to USA because it is expensive and risky market to enter, and instead chose easier markets for overseas expansion.
As any hope of rapprochement is now done for, they will revert to their old ways.
Comrades from AS4134 must be now scrambling everybody and everything into damage control mode. I think they firmly believed that they had an impenetrable cover.
It's from a quote by the head of communications at NSM.
So downvote away, but these documents do exist and these circumstances can and will happen.
In fact, everyone impacted by Aurora, were strictly under gag orders during the onset of that investigation too.
As for why Apple/Amazon are denying it I wonder if it's because they don't want to burn bridges. If they confirm the allegations, how would that play out in the Chinese business world?