The traditional fortress mentality of system security has proven ineffective to attacks by disruptive technologies. This is due largely to their reactive nature. Disruptive security technologies, on the other hand, are proactive in their approach to attacks. They allow systems to adapt to incoming threats, removing many of the vulnerabilities explo

Overview. Network Security Problems. Current Security Solutions. Disruptive Technologies. Understanding Networks. Understanding Mobile Code. Protecting Mobile Code. Protecting Mobile Code Platforms. Maintaining Trust on the Network. Designing Peer-To-Peer Systems. Emergent Routing and Resource Discovery. Denial of Service Countermeasures. Conclusions. Index.