The strickt pertinence in interrogative strategy making means that interogation process must be carried out in connection with the suspect’s psychological weaknesses.

This paper presents a working model for information system security evaluation and related vulnerability management, defines some basic concepts in information security evaluation such as assets, value of assets, threat and vulnerability, and then puts forward some principles for the quantification of these concepts.

This paper analyses the reasons why psychological inferiority comes into being from different angles, such as the disparity between the rich and the poor, the cultural differences between urban and rural areas, different growing environment and individual psychological factors.