According to the Financial Times, the Chinese military hacked into a Pentagon computer network in June of this year.
The Chinese are probing us, perhaps to find out if we will come to the aid of Russia after the Chinese invade Kazahstan, and are on Russia's doorstep. Kazakhstan (and the border area with Russia) is rich in natural resources such as coal, gold,iron, uranium, chromium, diamonds, manganese, and copper. All useful to a nation whose economy is based on industrial production.
Call me crazy.