Abstract: Nowdays, social network has the same characteristics, such as rapid propagation, large numbers of target crowd, wideranging influence, which rapidly becomes one of the important windows reflecting popular wishes. Meanwhile, social network is also faced with some security problems containing behavior, information content and structure, which result in internet fraud, privacy disclosure, rumor propagation, and so on, and influence the safety and prosperity of the masses, social harmony and stability. Therefore, in the face of cyberspace in social network, build a sound law, deeply mine public sentiment, and strengthen the assessment of network, which have important practical significance for utilizing the platform efficiently and maintaining the security of cyberspace in social network.

Key words: social network, security problems, build a sound law, mine the public sentiment, assess network

摘要： 当前，社交网络具有传播速度快、受众人员多、影响范围广等特点，迅速成为反映社情民意最重要的窗口之一.同时，社交网络也面临一些行为的、信息内容的、结构的安全问题，导致一些网络诈骗、隐私泄露、谣言传播等现象频发，影响了人民群众的安居乐业与社会的和谐稳定.因此，面对社交网络空间，健全法律制度、深入挖掘舆情、加强网络评估，对于有效运用社交网络平台、维护社交网络空间安全具有重要的现实意义.

关键词: 社交网络, 安全问题, 健全法律, 舆情挖掘, 网络评估