关键词: 网络平台, 共享经济, 隐私风险, 成本收益, 适度规制

Abstract: In the environment of current internet platform economy, especially sharing economy, privacy risk has become increasingly serious. However, due to factors such as individual irrationality, incomplete information, and externalities, it is impossible to achieve the ideal state of privacy protection by relying solely on the market, and it is necessary to solve the problem with the help of the power of regulation. The difficulty of regulation lies in how to strike a balance between privacy protection and information flow. Based on a comparative analysis of the cost-benefit of users, enterprises, and the society under different levels of privacy regulation, this paper finds that a moderate regulatory interval can be derived for the reference of regulatory agencies. Based on this, the paper concludes that appropriate regulatory objectives of privacy risk can be achieved through the joint formulation of regulatory standards, the use of self-strengthening mechanisms,and the choice of appropriate opportunity to intervene and appropriate implementation.

Key words: Network Platform, Sharing Economy, Privacy Risk, Cost-benefit, Moderate Regulation