The security flaws in Audible translates to the site not waiting to authenticate credit card payments prior to letting users purchase books. In other words, just about anyone is able to key in fake information to the site before making away with an unlimited number of audio books.
The security flaw was discovered by a certain Alan Joseph, who is a 19-year-old computer science student from Bangalore, India, where it has also been confirmed that such a technique could be replicated without a hitch. So far, Business Insider has already alerted Audible concerning this flaw, but there has been no comment or official reaction from Audible just yet. Hopefully, this is one flaw that can be fixed in due time, and the sooner the better!