Apple ID unauthorized sign-in attempt
Should I change my Apple ID if someone has tried to use it to sign into my account?
Question marked as
If I were you, I’d would not bother changing it. An Apple ID is simply an email address for you. It doesn't really add much in terms of security unless you never email anybody from that account, don't tell anybody about it, and make it something impossibly complicated that it would take a stable of supercomputers to guess. Security is added by your password and your two factor authentication method.
Read this article about that --> Security and your Apple Account - Apple Support
Note that Apple does not tell you to change your Apple ID (account user name) if you have a compromised account. If you think your Apple Account has been compromised - Apple Support
