So have you ever called up your credit card company to get some account info, and they ask you what your mother's maiden name is? Do they seriously think of this as a secure means of identity verification?
What if they can't understand what you are saying when you give them your mother's maiden name? Surely they wouldn't be able to assist you any further, right? This guy found out that hacking your own visa account would be easier than you might think.
Pretty dang entertaining if you ask me. :)