Alex pointed me at a good article on
TheRegister yesterday. This article is written by John Leyden and published Tuesday 19 July 2005 and is titled "
Visa cuts CardSystems over security breach". This article talks about a card processing firm that has been dumped by Visa for allowing card numbers to be disclosed from its systems. The company should not have even had the card details in its systems. The company held the data unencrypted and security vulnerabilities allowed the car data to be stolen.
Even though the article doesn't actually say that the data in question was held in a database or even if it was then whether it was an Oracle database. That said this is still an interesting article for anyone running an Oracle database and storing in that database critical data such as credit cards. It is a lesson in why credit card data should be encrypted.