I just read the post from astroboysoup in the “Lost 220 thousand ADA”-thread. They seem to be implementing exactly the sort of thing i was talking about.
Blockquote Isolate intelligence content. … We will make lists of malicious wallet addresses available to wallet software and online exchanges so that new users can be warned when they are about to send money to them, and given a chance to read more about giveaway scams.
and further down at the end of his post
Blockquote A user on Yoroi, when submitting a send transaction will get an alert message letting them know that the address could be a negative address that has been used or is related to a scam.
So glad to see that someone is actually already working on this and even on a lot more.
Btw heres the link to the post: Lost 220 thousand ADA because of a YouTube video - #76 by astroboysoup