In October 2018, Bloomberg recounted a Chinese supply-chain attack on Supermicro motherboards used in servers for Amazon, Apple, and more than 20 other companies. https://www.bloomberg.com/
This presentation demonstrates how I replicated it, on a Cisco firewall, with a shoestring budget, and how you can, too.
You may have seen a preview of my work in an article in Wired by Andy Greenberg:
https://www.wired.com/story/