What should a user do if they suspect their Apple ID has been compromised?

When a user suspects that their Apple ID has been compromised, changing their password immediately is crucial. This step helps to secure the account by preventing unauthorized access. If someone else has gained access to the account, changing the password minimizes the risk that they can continue to use the account without the owner's permission.

Additionally, after changing the password, it's advisable for the user to enable two-factor authentication if they haven't already. This adds an extra layer of security, making it more difficult for anyone to access the account without the user's trusted devices or codes.

While other actions like contacting a bank might seem relevant, they do not address the immediate security concerns regarding the Apple ID itself. Ignoring suspicious notifications can lead to further compromise, and depositing funds into a new account does not directly protect the Apple ID. Thus, taking swift action to change the password is the most effective response.