This isn't the first time this has happened, I remember when it was discovered in 2008 that a ton of POS card reader/pin payment machines were sending stolen da

This isn't the first time this has happened, I remember when it was discovered in 2008 that a ton of POS card reader/pin payment machines were sending stolen data back to servers and it was built into (or sabotaged into) the machines themselves from the manufacturer (or intercepted by pirates along the way). Seems like now is a great time to get into the hardware supply chain security/QA verification business. And how feasible is it to obfuscate the design purpose and logic of chips at manufacture as they propose in the article?