[grun]

- afaik no openai or anth model weight have been leaked to date

- confidential computing and trusted execution environments (TEEs) are the strongest primitive yet invented to prevent model weight exfiltration. there are other techniques. like bandwidth limiting of GPU workers and key sealing. but none as strong as those afforded by confidential computing and TEEs

- see https://confidential.ai/docs/confidential-computing-primer for a primer on confidential computing

- using confidential computing and TEEs to protect model weights in use is an area of active research

note: i work on confidential.ai