For the benefit and sake of both sides, venture capital agreements can make clear definitions on rights and obligations of both sides of venture investment prior to the actual implementation in forms of legal documentations.

Based on the agent theory in the western economics,the management mechanism and corresponding guarantee system have been established,which set risk agreement as the frame and control the whole process of chemical measures.

By dividing risks into layers according to protocol tree,we created a model for network protocol risk evaluation and provided a new way and calculation method for network information security risk analysis.