The one that's so incredibly broken that Apple and Visa keep blaming eachother when they get a report that you can steal any amount by making yourself pass as a transit card ? Cool security theater. https://hackernoon.com/veritasium-stole-$10000-from-mkbhds-l...
This just sounds like a bug. Haven’t delved too deep into it technically though.
Anyway flawed implementation doesn’t mean that hardware attestation is a fundamentally useless primitive. Apple Wallet is responsible for millions of transactions a day.