This book is about database security and auditing. You will learn many methods and techniques that will be helpful in securing, monitoring and auditing database environments. It covers diverse topics that include all aspects of database security and auditing - including network security for databases, authentication and authorization issues, links and replication, database Trojans, etc. You will also learn of vulnerabilities and attacks that exist within various database environments or that have been used to attack databases (and that have since been fixed). These will often be explained to an "internals" level. There are many sections which outline the "anatomy of an attack" - before delving into the details of how to combat such an attack. Equally important, you will learn about the database auditing landscape - both from a business and regulatory requirements perspective as well as from a technical implementation perspective.