Here's where it gets interesting...
As a result, officials said, the penetration almost certainly gave China a road map to discover which of China’s spies the United States has identified and which they have missed.
That's as far into it as I got using 12ft.io - you have a subscription, or what magic are you using to see the entire article?
Edit: Or does archive.org penetrate paywalls???
Not every paywall but archive.today works for most. That is why I always post it in the comments.