How deep do Chinese cyberattacks against the U.S. run?

If there is a small vulnerability to exploit, Beijing will find it.

In a recently declassified report summary, the Department of Defense (DoD) has deemed China the most flagrant threat in the realm of cybersecurity. The report, presented to Congress, serves as the blueprint paper determining defense priorities for the Pentagon’s National Security, Defense and Cybersecurity Strategies.

So, what is Washington doing about it?