Yusra Elbitar (CISPA Helmholtz Center for Information Security), Alexander Hart (CISPA Helmholtz Center for Information Security), Sven Bugiel (CISPA Helmholtz Center for Information Security)

Rationales offer a method for app developers to convey their permission needs to users. While guidelines and recommendations exist on how to request permissions, developers have the creative freedom to design and phrase these rationales. In this work, we explore the characteristics of real-world rationales and how their building blocks affect users' permission decisions and their evaluation of those decisions. Through an analysis of 720 sentences and 428 screenshots of rationales from the top apps of Google Play, we identify the various phrasing and design elements of rationales. Subsequently, in a user study involving 960 participants, we explore how different combinations of phrasings impact users' permission decision-making process. By aligning our insights with established recommendations, we offer actionable guidelines for developers, aiming to make rationales a usable security instrument for users.

View More Papers

Revisiting EM-based Estimation for Locally Differentially Private Protocols

Yutong Ye (Institute of software, Chinese Academy of Sciences & Zhongguancun Laboratory, Beijing, PR.China.), Tianhao Wang (University of Virginia), Min Zhang (Institute of Software, Chinese Academy of Sciences), Dengguo Feng (Institute of Software, Chinese Academy of Sciences)

Read More

Safety Misalignment Against Large Language Models

Yichen Gong (Tsinghua University), Delong Ran (Tsinghua University), Xinlei He (Hong Kong University of Science and Technology (Guangzhou)), Tianshuo Cong (Tsinghua University), Anyu Wang (Tsinghua University), Xiaoyun Wang (Tsinghua University)

Read More

“Where Are We On Cyber?” – A Qualitative Study...

Jens Christian Opdenbusch (Ruhr University Bochum), Jonas Hielscher (Ruhr University Bochum), M. Angela Sasse (Ruhr University Bochum, University College London)

Read More

User Comprehension and Comfort with Eye-Tracking and Hand-Tracking Permissions...

Kaiming Cheng (University of Washington), Mattea Sim (Indiana University), Tadayoshi Kohno (University of Washington), Franziska Roesner (University of Washington)

Read More