Rescriber: Smaller-LLM-Powered User-Led Data Minimization for LLM-Based Chatbots

• URL: http://arxiv.org/abs/2410.11876v3
• Date: Tue, 11 Feb 2025 19:56:20 GMT
• Title: Rescriber: Smaller-LLM-Powered User-Led Data Minimization for LLM-Based Chatbots
• Authors: Jijie Zhou, Eryue Xu, Yaoyao Wu, Tianshi Li,
• Abstract summary: Rescriber is a browser extension that supports user-led data minimization in LLM-based conversational agents. Our studies showed that Rescriber helped users reduce unnecessary disclosure and addressed their privacy concerns. Our findings confirm the viability of smaller-LLM-powered, user-facing, on-device privacy controls.
• Score: 2.2447085410328103
• License:
• Abstract: The proliferation of LLM-based conversational agents has resulted in excessive disclosure of identifiable or sensitive information. However, existing technologies fail to offer perceptible control or account for users' personal preferences about privacy-utility tradeoffs due to the lack of user involvement. To bridge this gap, we designed, built, and evaluated Rescriber, a browser extension that supports user-led data minimization in LLM-based conversational agents by helping users detect and sanitize personal information in their prompts. Our studies (N=12) showed that Rescriber helped users reduce unnecessary disclosure and addressed their privacy concerns. Users' subjective perceptions of the system powered by Llama3-8B were on par with that by GPT-4o. The comprehensiveness and consistency of the detection and sanitization emerge as essential factors that affect users' trust and perceived protection. Our findings confirm the viability of smaller-LLM-powered, user-facing, on-device privacy controls, presenting a promising approach to address the privacy and trust challenges of AI.

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