iCloud email has been hacked
I received an email from my own account stating that he has information and videos of me that he’s going to publicly post saying he wants $1200 . Email he used to communicate with me through my own iCloud is colohigh**@iclоud*** I tried forwarding this to anybody I will not allow me too. How do I find out who this person is? How do I check my account from here on forward?
[Edited by Moderator]