ivobruce

. Information system definition: a system that combines management theory and methods, applies

three dimensional structure of information system Hall: time dimension

definition of information Shannon in the mathematical theory of communication

principles of information system construction and development methods of information system

Information system construction: complexity of information system construction

1) Information system: concept of information system, function of information system,

hypothesis premise assessment and data accuracy assessment full process guidance for

) extrapolation (using historical data) qualitative assessment matrix analysis risk development trend assessment methods project

, on-site observation method, historical data environment analysis method, analogy method, expert consultation 2Risk

Methods of risk identification: inquiry method (mind scenery method

assessment 4. Design the corresponding original Countermeasures - control risks according to the magnitude and priority of risks 5. Carry out input-output assessment on the design

Analysis of existing system (business process)

and formulate preventive measures for it. The relationship between information security and security risk

Chapter 25 information system security risk assessment 25.1 information security and information risk how to design and formulate an information security assurance system for a new system that has not yet been established?It is to analyze, identify and evaluate the security risks of the

definition of information security assurance system: information security assurance system is a professional information application system that integrates various hardware, software and password equipment on the network to ensure the normal operation of other business application information systems