3 papers
cs.CR2026
PromptPET: Privacy-Utility Optimized Prompt Obfuscation
Ke Yang, Olivia Figueira, Umar Iqbal +1
Privacy is an important challenge when users interact with AI chatbots, since users may share sensitive information, explicitly or implicitly, and AI chatbots can use this informat…
cs.CR2025
Towards Automating Data Access Permissions in AI Agents
Yuhao Wu, Ke Yang, Franziska Roesner +3
As AI agents attempt to autonomously act on users' behalf, they raise transparency and control issues. We argue that permission-based access control is indispensable in providing m…
cs.CR2025
An In-Depth Investigation of Data Collection in LLM App Ecosystems
Yuhao Wu, Evin Jaff, Ke Yang +2
LLM app (tool) ecosystems are rapidly evolving to support sophisticated use cases that often require extensive user data collection. Given that LLM apps are developed by third part…