So the Chinese have apparently been caught sticking chips onto motherboard manufactured in China for western companies. Apple and Amazon are denying it, but the US government isn't commenting. Bloomberg claims an extensive investigation shows China pressured Chinese manufacturers to install a tiny, barely visible chip on motherboards destined for the servers being assembled for a US company. They've apparently developed chips so tiny they can slip them between the layers of the fiberglass motherboard itself, rather than sitting on top. And since most computers are built in China, or at least assembled there that would sure as hell give them a lot of leeway to spy on anyone who purchases them.
https://www.bloomberg.com/news/features/2018-10-04/the-big-hack-how-china-used-a-tiny-chip-to-infiltrate-america-s-top-companiesCoincidental, or maybe not, to this, the Defense Department is trying to figure out how much of the new Arctic Patrol ships have gear sourced to China. Just because you're dealing with a US or Canadian company doesn't mean they don't build or assemble parts in China.
https://www.cbc.ca/news/politics/arctic-patrol-ships-chinese-content-1.4849562