Security is an interesting issue these days. I've taken many classes on
securing a computer, securing a network, and securing web applications.
It never occurred to me that you might want to secure data inside a
database. Oracle introduced a new product a few months ago that makes
sense. If you store your HR information, military secrets, or financial
data in a database and oursource your DBA responsibilities, you have
given away the keys to the kingdom. Many companies are starting to
outsource specific functions like database administration because
having a full time, fully qualified DBA on staff is expensive and hard
to keep busy. The Database Vault product from Oracle addresses this
issue. I personally like the viewlets that can be seen at Database
Vault page. They helped me understand how to use the product
as well as its value.