"Understanding The COLDCARD Mk4 Security Model and Secure Element Use"

Tristan Borgess wrote 4K words explaining this on a grade 9 level. It's a super cool document everyone should read.

https://pbs.twimg.com/media/FmmPMUMWYAA4MPR?format=png

https://blog.coinkite.com/understanding-mk4-security-model/