Research on computer immune system with multilayer recovery

There are many excellent characteristics in the nature immune system that can be cited in the computer immune system. Until now, some of them are being used in the safe of the computer great. But now in the computer immune system, the methods of the detection in some stage are singly. For this problem, a sort of computer immune system with multilayer recovery is designed here. It has three layers to protect the system and different detections are used in them according to different conditions and stages. All this work can improve the rate of detection and reduce the rate of the wrong catch.