Risk-Based Dynamic Identity Authentication Method Based on the UCON Model

Table 5

Level of risk behavior.

Level	Value	Type of behavior	Introduction
IV	75–100	Malicious security behavior	Attack system through a virus or Trojan horse; may cause very serious damage
II	50–75	Behavior of breaking a contract	Unauthorized operation may affect the normal operation of the system
I	25–50	Abnormal behavior	Includes abnormal operation, abnormal access content, etc.; does a little harm to the system
I	0–25	Abnormal condition	Includes abnormal login location, abnormal equipment, etc.; has almost no impact on the system