We don't, but since it's an open network where all content is public anyway, there's limited safety/privacy concerns with infiltration like other women-only spaces. Ultimately if they are behaving in a woman-friendly way and not causing problems, they can probably get away with it. That's the trade-off of being more open and protecting user privacy. 

If it becomes a problem we may have to be stricter with pre-vetting prior to NIP-05 approval, but for now this is the policy:

https://image.nostr.build/749d6e885bf663bdc4a45f391bb7e9392d3078d83d86c9a90f5663a45d5c2061.png