Nested on the servers’ motherboards, the testers found a tiny microchip, not much bigger than a grain of rice, that wasn’t part of the boards’ original design.

Although affected companies deny allegations...

More: https://www.bloomberg.com/news/articles/2018-10-04/the-big-hack-the-software-side-of-china-s-supply-chain-attack

Also: https://www.lightbluetouchpaper.org/2018/10/05/making-sense-of-the-supermicro-motherboard-attack/

https://www.bloomberg.com/news/articles/2018-10-04/the-big-hack-amazon-apple-supermicro-and-beijing-respond

https://aws.amazon.com/blogs/security/setting-the-record-straight-on-bloomberg-businessweeks-erroneous-article/

https://www.apple.com/newsroom/2018/10/what-businessweek-got-wrong-about-apple/

source: HN