• Publications
  • Influence
An Inconvenient Trust: User Attitudes toward Security and Usability Tradeoffs for Key-Directory Encryption Systems
tl;dr
We asked participants to complete encrypted communication tasks using both a traditional key-exchange model and a key-directory-based registration model and asked them for their opinions. Expand
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The Potential for User-Tailored Privacy on Facebook
tl;dr
We developed adaptive versions of 19 Facebook privacy features, and for each feature we test three adaptation methods (Automation, Highlight and Suggestion) that can be used to implement the adaptive behavior. Expand
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Emotional and Practical Considerations Towards the Adoption and Abandonment of VPNs as a Privacy-Enhancing Technology
tl;dr
In this survey study about the adoption and usage of VPNs, we investigate people’s motivation to use VPNs and the barriers they encounter in adopting them. Expand
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Balancing Security and Usability in Encrypted Email
tl;dr
A 52-person user study found that participants could learn to understand properties of different encryption models. Expand
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Moving Beyond a "one-size fits all": Exploring Individual Differences in Privacy
tl;dr
We will highlight individual differences (e.g., age, culture, personal preference) that influence users' experiences and privacy-related outcomes and propose best practices for research, design, and online privacy regulation policies that consider these differences. Expand
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Social media's have-nots: an era of social disenfranchisement
tl;dr
This paper provides empirical insights into a formerly uninvestigated population of non-users who are prevented from using social media because of social engagement (rather than functional) barriers. Expand
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Cross-cultural perspectives on eHealth privacy in Africa
tl;dr
In this paper, we propose a research agenda to investigate the effect of cultural, constitutional, and societal factors on privacy concerns and preferences among the different African countries in the context of healthcare technologies. Expand
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Moving beyond a “one-size fits all” approach: Exploring Individual Differences in Privacy
tl;dr
We will highlight individual differences (e.g., age, culture, personal preference) that influence users’ experiences and privacy-related outcomes. Expand
  • 2
Privacy at a Glance: The User-Centric Design of Glanceable Data Exposure Visualizations
tl;dr
A pervasive, soft paternalistic approach to privacy-related visualization may raise awareness by enhancing the transparency of information flow, thereby, unobtrusively increasing users’ understanding of data sharing practices of mobile apps. Expand
Chapter 11 Avoiding Online Harassment : The Socially Disenfranchised
As social media increasingly mediate our relationships and social lives, individuals are becomingmore connected andgaining social benefits.However,many are now experiencing online harassment.Expand