The attack by Chinese spies reached almost 30 U.S. companies, including Amazon and Apple, by compromising America’s technology supply chain, according to extensive interviews with government and corporate sources.
— Read on www.bloomberg.com/news/features/2018-10-04/the-big-hack-how-china-used-a-tiny-chip-to-infiltrate-america-s-top-companies
I like this quote from the TV show Elementary:

Are governments capable of evil? Yes. Of corse they are. All institutions are. But they are more capable of incompetence.

Apply a bit of Occam’s Razor as well and the puzzle gets a bit less scary.
Again, the news is still forthcoming so I may well eat my words.

Be nice with what you write.