I remember finding a teardown of an IBM 4765 module somewhere. That was badass.

Is that the PCIe crypto module shown in Google searches for IBM 4765? Please share the link if you have it, as I couldn't find a teardown in my brief search. I'd like to see how one would dismantle a potted circuit.

Yeah it's the crypto module. I think the teardown involved shaving the part down layer by layer and examining all the parts like the fine wire meshes that would instantly blow the chip if disrupted and etc. Wish I could remember where I saw it.