Recovering iCloud access after being hacked

See this support article: If you think your Apple Account has been compromised - Apple Support

There’s plenty of ways to go about this I would first reset all my passwords starting with your Apple ID/iCloud than check and see if you had everything backed up than I would go to keychain and see the furthest backup and than do a reset than restore from the furthest backup (or just manually reinstall all apps after you change all your password and verification methods) you definitely should find out what type of “hacked” you were involved in it’s alway good to identify where the threat is coming from also for what reasons were you hacked. Is your software compromised? You don’t want it to keep happening over and over again after that definitely encrypt all your devices if possible change your recovery keys also take off access iCloud from the web if you have family share on maybe separate accounts for each family member temporarily turn your advanced Data protection on make sure private relay is on for each device also if your WiFi provider doesn’t come with a vpn definitely look into protecting your data via VPN only download apps your using that’s just a start use biometrics if possible your passkey maybe saved on your device via biometrics which than it’s either encrypted with one of your apple devices always do two way verification look into getting an external passkey nfc for upgrading your device in the future or via lightning I would personally not use nfc. Hopefully you had keychain on on your Mac if not after you update all passwords turn keychain on than do a backup make sure to keep your security updates updated good luck

you could have been removed from the account you were using this morning