A four-concern-oriented secure is development approach

In this paper, we advocate a strong separation of four aspects of information systems: data, dynamic behavior, security data and access control behavior. We describe how to model each of these aspects using formal methods. An abstract specification of each part of an information system is defined. The presented approach can be used when building a system from scratch but can also be applied to implement a security controller for an existing system. In parallel with models, properties of the system are written. These properties are checked against the system´s models to ensure they hold using model checking techniques.