They are guessing.
The case will never go to court. The DOJ knows it so they don't have to have actual evidence.
The indicment is being publicised for political reasons.
The case will never go to court. The DOJ knows it so they don't have to have actual evidence.
The indicment is being publicised for political reasons.
The Chinese are a bogeyman comparable to the Russians. Being tough on them and have the other party being in bed with them is something that is surely useful in a coming election campaign.
As for the ability to trace back traffic sent through 30+ computers placed around the world including China; just think of what surveillance and logging that would entail. It is not really possible.