Very belated edit: That comes across as a bit heartless. I mean, we have no clue who each other are in meatspace. So why is a potential identity change so probl

Very belated edit: That comes across as a bit heartless. I mean, we have no clue who each other are in meatspace. So why is a potential identity change so problematic? It's just the TFA example: > Bob (Eve): Hey Hey > Alice: Yo Bob! Looks like you got new safety numbers. > Bob (Eve): Yeah, I got the iPhone XS, nice phone, I'm really happy with it. Let's exchange safety numbers at RWC 2020. Hey - do you have Caroline's current address? Gonna surprise her while I'm in SF. > Alice: Bad call, Android 4 life! Yeah 555 Cozy Street. Now, I and my iffy correspondent have never shared anything actionable about third parties. But I do know a little about what he's doing, and have offered advice. And it would be very hard to continue doing that, without the risk of revealing potentially damaging information.