Today a bunch of my open-source projects got slammed by incorrect AI-written vulnerability reports demanding $299 for disclosure
@jonty if this were to happen to me I'd press charges for blackmail, extortion whilst notifying said platforms to quick-freeze records as they'll be listed as withnesses for the police to collect evidence from.
Some legitimate folks got burned by doing this because asking for money to not do a bad thing meets the legal definition of blackmail, even if it's well intentioned. If they have an actual business that they want you to contact, you may be able to get the police involved.