The worst of those I've had was a message that asked "What is your current salary?", while saying nothing whatsoever about the role they have. Not even whether

The worst of those I've had was a message that asked "What is your current salary?", while saying nothing whatsoever about the role they have. Not even whether it was a tech role. To add a cherry on top, they began with "I'm a headhunter and my client has asked me to contact you specifically..." I engaged with that one, but only enough to confirm that the client hadn't asked for me, that nobody had read my profile, and the recruiter was not a headhunter.