Over the past two weeks there have been some new articles related to database security been published on developerWorks, some have been updated. At IBM, the products in this area are all called InfoSphere Guardium, covering activity monitoring, auditing, encryption and more.
A series of articles describes the use of Guardium for a NoSQL database like MongoDB. Security in the context of "Big Data" is covered in a recently updated developerWorks article, dealing with the Hadoop framework.