Paper: Distributed architectures and algorithms for network security

As our society becomes more dependent on networked information systems, it is
also becoming increasingly vulnerable to their misuse. The large amount of
sensitive information transmitted over computer networks and stored on databases,
as well as the high revenues that industries can generate through Internet-based
applications, translate in valuable targets for attackers.


more here..............http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.410.7418&rep=rep1&type=pdf