Survivability of Network Information System: An Overview

Society has become so dependent on information systems that provide the information underpinnings for critical infrastructure applications. With the development of network technology, these systems continue to emerge and grow, and have become unbounded networked systems that are highly distributed. But traditional security technology is not sufficient to deal with the protection and survivability of highly distributed information systems operating in unbounded networks. Survivability research is the key to resolve the problem. This paper organizes and summarizes the current literatures and presents an overview of survivability research by discussing the definition, the various techniques and the estimate models of survivability, and finally, presents a conclusion and future work.