Based on the updates Musser wrote at the bottom of the report's web page, he first discovered the flaw in October last year. Amazon patched it up shortly after he reported it, but it made its way back after a "Manage Your Kindle" overhaul. Still, he believes the issue should be easy to avoid, so long as you don't download e-books (pirated or otherwise) from websites you don't know. Aside from Kindle, another Amazon-owned service was also thrust into the spotlight earlier for exhibiting a security flaw. Audible, the company's audiobooks service, apparently allowed users to use fake emails and credit card numbers in order to download as many files as they want. An Audible spokesperson stressed, however, that transactions made using fake credit cards were "closed quickly" and that the service takes credit card fraud seriously.