In your account settings, you can now enable Google Authenticator. Enabling this will mean that your account will require 2-factor authentication when logging into CougarBoard. This is similar to the little dongles with the rotating number on them, except that the number is generated by an application on your phone.

Since CougarBoard isn't a bank, and doesn't really have much in the way of personal information, this is probably overkill for most people.