Pawb.Social Feedback

So I'm sure some of you have also gotten the spam DMs supposedly from "Nicole, the fediverse chick". She is notorious enough across Lemmy to even have her own community now. I think I've gotten like 6 Nicole DMs. While those may seem amusing on their own, there is the worrying suggestion that they might actually be a deanonymization attack. In light of that possibility, are there any measures the admins here could consider to prevent this kind of attack from happening? Other instances' solutions include for example rehosting external embedded images, filtering out external images from DMs entirely or trying to implement filters for preventing spam DMs from being sent. Especially one of the former two solutions would in my opinion be quite good options to protect the privacy of pawb.social users.