My fiancée just got an iMessage from his own phone number. They sent multiple nudes, and outdated personal info like his parents' names, their house information, etc., to a group chat with multiple people in his family. They wanted money obviously. He blocked the number and took screenshots, but we're wondering if this is a hack on his Apple ID or his phone itself. I've heard of this happening but never experienced it. We're planning on making a new Apple ID and new emails associated with it, but looking for any other pointers or things to look for.