Security has long been acknowledged as vitally important in enterprise systems design because of its key role it has in protecting the resources belonging to the organization and in ensuring that the organization meets its objectives. As populations become more and more comfortable with the extensive use of networks and the Internet, as our reliance on the knowledge-intensive technology grows, and as progress in the computer software and wireless telecommunication increases accessibility, there will be a higher risk of unmanageable failure in enterprise systems.

Today, information systems are widely spread and connected over the networks, but also heterogeneous, which involves more complexity. This situation has dramatic drawback regarding threats, which are now occurring on these networks. The drawback of being open and interconnected is the increase risk of being open to a wide range of threats and attacks.

From a business perspective, information about customers, competitors, products and processes is a key issue for its success. The increasing importance of information technology for production, providing and maintaining consistent security of this information and across networks becomes one of the major business activities. This means that it requires a high flexibility of the organizational infrastructure and on the introduction of new ways of information usage.

In such a complex world, there is a strong need for security to ensure protection and maintain organizations' operational activities.