An unknown person is trying to join my Family Sharing
I just got an email from Apple about a very random person joining my family sharing. I then received another email from apple to say that they had left the family sharing. I am confused at how this is possible and concerned for my family's privacy and security.. How can I make sure my family sharing is secure and not free to the public?
Is this a fake apple email?
[Edited by Moderator]
iPhone 11 Pro Max, iOS 15