I got a message saying my stolen iPhone was found. Is it from Apple?

Reviewed answer

The message may be trying to steal your sign-in or remove the phone's theft protection.

Check Find My directly on another trusted device or by typing icloud.com/find yourself.
Do not enter your passcode, password, or verification code into a page reached through the message.
Do not remove the missing device from Find My at a stranger's request. If you disclosed credentials, secure your Apple Account immediately.

Get help if

The sender threatens you, asks you to remove Activation Lock, or sends a link that imitates Apple's sign-in page.