Security Over the Information Systems Development Cycle

Information security is currently considered to be a crucial aspect of systems development. However it has traditionally been considered during the final stages of development, once the main components of the system have been developed and therefore provides solutions which are inappropriate for security integration. Software engineering has traditionally been separated from security engineering, and security issues have not usually been included in software engineering processes, activities, techniques, models, and so on. Furthermore, security engineering has not been aligned with information systems, and has focused rather on the definition of protocols, cryptographic algorithms, access control policies, etc. However, the scientific community is beginning to realize the importance of aligning software engineering and security engineering in order to develop more secure systems. Security in software engineering is a branch of research in which many contributions dealing with security integration from the early development stages have recently appeared. This chapter discusses some of the most interesting contributions in this area, and also provides a summary of our contributions through the development of various research lines dealing with different strategies to integrate security into information systems development as early in the development stages as is possible.