RAT malware

not apart from it is probably a good idea if you read

Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

and also

Identify legitimate emails from the App Store or iTunes Store - Apple Support

See >>> Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

If you are unsure of the source or provenance of a message or alert, do not respond to, or engage with, the message. Certainly do not, under any circumstances, attempt to contact anyone using the contact details that may have been provided within the message itself. If received via email, delete it - ensuring that it has also been deleted from your Bin/Trash folder.

Most scam alerts are designed to scare the unwary into giving away sensitive information - or to fool you into doing something that you shouldn’t - usually to defraud you financially.

If you suspect that your AppleID many have been compromised, follow the advice outlined here:

If you think your Apple ID has been compromised - Apple Support