[目的/意义] 伴随着社交网络的流行，用户通过社交平台大量下载使用第三方应用程序（即社交APP），由此产生隐私关注。关注对象除个人隐私外，还包括用户朋友的隐私，即关联隐私。通过对关联隐私价值的计量，证实关联隐私的广泛存在，为社交APP中关联隐私政策的制定提供依据。[方法/过程] 通过实证调查及文献回顾，证实关联隐私的广泛存在，提出相应研究问题及研究假设。采用联合分析法，通过问卷调查分析个体偏好，推理用户选择APP的影响因素，定量估计关联隐私的价值。[结果/结论] 研究结果发现，用户选择使用APP时会考虑朋友隐私，但对朋友隐私的估值相对较低。当考虑到社交APP采集用户信息的情境对关联隐私价值的影响时，通过引入两种情境，即APP采集的用户朋友信息是否会提升APP的功能实现和使用效果，结果表明只有当这两种情境作用于朋友的完整信息时产生的关联隐私差异才具有显著性，这说明对用户来说，保护朋友的基本信息不是那么重要，但对于敏感信息（完整信息中去除基本信息的部分）的不合理请求会对APP评价产生负面效用。
[Purpose/significance] With the widespread popularity of social networks, users download a large number of third-party applications (that is, the social APP) through social platforms, which raises privacy concerns. In addition to personal privacy (called direct privacy), the objects of concern also include the privacy of users' friends, called linking privacy.Based on the measurement of the value of linking privacy, the extensive existence of linking privacy is confirmed, which provides a basis for the formulation of linking privacy policy in social apps. [Method/process] Through empirical investigation and literature review, this paper confirmed the extensive existence of linking privacy, and put forward corresponding research questions and research hypotheses. The joint analysis method was adopted to analyze individual preferences through questionnaires, deduced the influencing factors of users' APP selection, and quantitatively estimated the value of related privacy. [Result/conclusion] This paper finds that users consider friends' privacy when they choose to use apps, but value their friends' privacy at a relatively low level. When considering the situation of social APP to collect user information's influence on the linking value of privacy, by introducing two kinds of situations, namely whether the APP to collect user friend information will promote the realization of the function of the APP and use effect, the results show that only when the two kinds of situation on the friend's complete information of linking privacy just have significant differences. It indicates that it is not so important for users to protect the basic information of friends, but unreasonable requests for sensitive information (the part of complete information that removes the basic information) will have a negative effect on APP evaluation.
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