received a notice that my apple id was used on another device and want to check on it?
how do i know if my apple id is being stolen?
Question marked as
Click on this link "If you think your Apple ID has been compromised" --> https://support.apple.com/HT204145
'Checklist: If you want to see if anyone else has access to your device or accounts' click here --> https://support.apple.com/HT212021
Security and your Apple ID - https://support.apple.com/HT201303
Contact Apple for help with Apple ID account security - https://support.apple.com/HT204169 "This article provides country-specific Apple Support contact information for customers seeking help with their Apple ID password or other security-related issues." Better for directly reporting an issue.