System security is like the proverbial chain that is only as strong as its weakest link. To be effective,
security must be as tight as necessary throughout the entire IT infrastructure. The operating system (OS), middleware, and database may be bulletproof, but if an application has a vulnerability, then the whole system is at risk. To be truly robust, the infrastructure needs to be secure at every layer. This white paper details the security features in each layer of Oracle’s integrated end-to-end solution stack, including infrastructure, database, middleware and application security, as well as the economic benefits of deploying a defense-in-depth strategy.