Ok, this is a example of a crypto address : 0x6dD9EF7464A3c28f1285bCCB95bE83dC4A9De3ca
Not easy to detect by a regex imho. What I would like is that if a member tries to publish an address of this type it is obfuscated in the public message. And possibly visible for moderation but this is not necessarily the most important.