To sign out of iCloud on all of your devices at once, you can head to iCloud's website and change your password.

The importance of using strong, unique passwords for each account is emphasised. If your iCloud password is weak, it's time to upgrade it to something stronger with a mix of uppercase, lowercase, ...

Two-factor authentication adds a barrier between whoever's logging in and the account by requiring authentication in two ways, such as a computer and phone. This ...