Change your Box from AT&T password in the Box from AT&T web portal
1. From the home screen, click on the profile icon at the top right of the page.
2. Click Account Settings in the drop-down menu.
3. Scroll down to the “Authentication” section.
4. Click the Change Password link under “Current Password”.
5. Click in the field to the under “Current Password”, and enter your current password.
6. Click in the field to the under “New Password”, and enter your new password.
7. Click in the field to the under “Confirm New Password”, and re-enter your new password.
8. Click the Save button.