find my iphone turned on by someone else
This morning, I woke up to find that "find my iphone" had been activated on my phone. I was able to unlock it with my appleID and password, but I'm worried this means my account has been compromised somehow. I purchased the phone new from an authorized retailer over six months ago and this is the first time I've had this problem. Possibly related: I have changed my appleID since I bought and activated the phone, from a defunct @mac.com address to my current email, but didn't change it on the phone, so I can't see it on my page on the appleID portal. Does anyone know what might have happened/what I should do? I've already turned off Find My iPhone and logged out of cloud access until I can figure out how to update the appleID on the phone.
iPhone SE, iOS 10.2