You can change your password as the following:
① After login, click on [My Page] on the top.
② From the left menu, click on [Change My Info].
③ Enter your new password.
④ Reenter your new password, then click [OK].
* Your password must be 8-12 characters long and include uppercase and lowercase letters, numbers and special character. (10 characters or more when using a mixture of 2 types. 8 characters or more when using a mixture of 3 types) For more details, please read the password guidelines.