If this is the same dude I am thinking of, his wife is also the CISO of Mozilla and do security research together, afair they have a whole book on x86 reverse engineering.

Very cool!

x86 Software Reverse‐Engineering, Cracking, and Counter‐Measures By Stephanie Domas and Christopher Domas

https://onlinelibrary.wiley.com/doi/book/10.1002/97813942771...