关键词:
摘要: Social networking systems (SNSs) such as Facebook allow users to control accesses certain information belonging them via a set of privacy settings. However, due various potential system design considerations and usability restrictions settings are never complete, i.e., not all the applicable policies related user configurable. In fact, access is governed by collection fixed specified SNS. We observe that an SNS less than transparent about policies; although some might be communicated help pages nudges (e.g., profile picture public on Facebook), they tend incomplete inaccurate. this paper, we propose approach infer enforced policy consequently unknown given explicit other Such helps end understand better implicit imposed can leveraged operator improve transparency their system.