I had never read anything about it till today,
Here's one reality I knew:
"Frankly, I worry more about attacks we can't even see, which the Russians are good at. The Chinese are relentless and don't seem to care about getting caught. And we have seen Chinese network operations inside certain of our electricity grids."
It felt a little weird when I copy pasted that since I use a Russian antivirus..
It was a rather informative read towards current cyberwarfare situation..