In general, if a login attempt is made to your Saxo account from a device that's not trusted before, an SMS to the registered mobile number would be needed for login.
If you have security concerns regarding your account, please log in and verify that you can access your account successfully. Check that your account balance, positions, orders etc appear correct.
If everything is in order, you may proceed to update your email address.
If you are not able to login or you still have concerns, please contact us immediately.
We will run through the necessary security checks to ensure that your account remains secure.