@octade While I don't know of anyone right off hand, @drewww may frequent other circles and know of some folks. I know they have done some deeper work at the intersection of tech/analytics and I suspect there is a Venn diagram overlap of that and cryptography.

For the raw math component, I know that the academic disciplines typically have groups (either via aguppe or just hashtags on the larger instances). I'm aware of some for medicine and history, and I suspect there are some for high level math as well.