Audit, do not just change passwords
For every account, review active sessions and authorized devices. Look for unknown sessions in Google, Apple ID, Microsoft, Meta, and your password manager. Revoke unfamiliar sessions before changing the password. Then change the password to a long unique passphrase, rotate the recovery email and recovery phone, and turn on a hardware security key or app-based two-factor authentication.
- Replace SMS two-factor with an authenticator app or hardware key (SMS is interceptable).
- Review the security questions; many were set with information the suspect knows.
- Audit OAuth-connected apps; revoke anything you do not recognize.