Follow these steps to update your Secret Question and Answer for Security:
1) Click on the Preferences menu located in the upper right hand of your account. The preferences window will open.
2) Under General Settings click Change Security Settings
3) Under the Secret Question/Answer heading, use the dropdown to select your prefered Secret Question
4) In the text box immediately below the Question, enter your Secret Answer
5) Click Save in the top-left corner of the preferences window