CAREER: UCPriv: User-Centric Privacy Management

到目前为止，定量安全和隐私度量指标的应用在探索系统的最坏情况属性时取得了最大的成功。 也就是说，在一个强大的对手面前，系统在多大程度上保留了一些相关的属性？虽然这种分析允许专家构建能够抵抗强大攻击者的系统，但许多部署的系统并不是以这种方式设计的。 事实上，越来越多的证据表明，作为使用社交、参与和分布式应用程序的副产品，用户的隐私经常会受到损害。鉴于人们在使用对最坏情况下的对手不安全的系统时发现了固有的效用，该项目研究了一个补充问题：我们能否帮助用户更好地管理他们在绝对意义上不保护隐私的系统中的参与？该项目正在开发一种原则性的方法，使个人能够（i）定量地指定和评估他们的安全，隐私和实用目标;（ii）定性地表达对这些目标的相对重要性的偏好;（iii）通过利用这些定量和定性规范产生的权衡空间来探索他们的系统交互的影响;及（iv）制定本地可执行的系统使用变更，以更好地平衡相互竞争的需求。 该项目正在设计计算工具，使日常用户能够通过了解安全性，隐私和实用性之间的相互作用来更好地管理他们的系统参与。 教育材料正在开发，以支持两个本科课程-一个为计算机科学专业和非专业-探讨我们日益数字化的社会，技术和隐私的影响。

To date, the application of quantitative security and privacy metrics metrics has seen its greatest successes when exploring the worst-case properties of a system. That is, given a powerful adversary, to what extent does the system preserve some relevant set of properties? While such analyses allow experts to build systems that are resistant to strong attackers, many deployed systems were not designed in this manner. In fact, there is growing evidence that users' privacy is routinely compromised as a byproduct of using social, participatory, and distributed applications. Given that people find inherent utility in using systems that are not secure against worst-case adversaries, this project investigates a complementary question: Can we help users better manage their participation in systems that are not privacy-preserving in an absolute sense?This project is developing a principled approach that enables individuals to (i) quantitatively specify and assess their security, privacy, and utility goals; (ii) qualitatively express preferences on the relative importance of these goals; (iii) explore the implications of their system interactions by leveraging the trade-off spaces resulting from these quantitative and qualitative specifications; and (iv) enact locally-enforceable changes to their system usage to better balance competing needs. This project is designing computational tools that enable everyday users to better manage their system participation by understanding the interplay between security, privacy, and utility. Educational materials are being developed to support two undergraduate courses---one for computer science majors and one for non-majors---that explore the social, technical, and privacy implications of our increasingly digitized society.