We propose an architecture of intrusion tolerance system,which combines intrusion detection with fault-tolerance and component-redundancy with diversity,and design a series of triggers to provide persistent and reliable service.

Intrusion tolerance system (ITS) is a new approach of computer security which has slowly emerged during the past decade, and obtained more attention in recent years.

This paper presents the design of a kind of intrusion tolerant database system,the purpose of which is to guarantee the completeness and reliability of the data in the case of that the database is attacked.

Intrusion Detection System Based on State Transferring Diagram;