2024 Security Symposium - Three-body Problem in Privacy Protection: Chaos or New Hope?

Lightning Talk #4, Wed. April 3rd, 11:00am ET “Three-body Problem in Privacy Protection: Chaos or New Hope?”
Wenhai Sun
Assistant Professor, Computer and Information Technology, Purdue University
Local differential privacy (LDP) has been widely integrated into commercial use for privatized data collection and analytical tasks. The beauty of LDP not only comes from its rigorous privacy guarantee but also its elegance in an adjustable balance between privacy and utility to satisfy various user and application demands. However, when putting LDP in a real-world scenario, the privacy-utility trade-off becomes fragile when an attacker aims to alter data utility by attempting to manipulate the LDP result. With this new security perspective, we have a new three-body problem in LDP, i.e., the relationships among security, privacy, and utility are uncertain. The consequences are profound from discouraging adoption of the privacy-friendly technologies to harming Internet freedom by suppressing the voice of target groups. In this talk, I will briefly introduce our exploratory work on the contribution to the understanding of the security dimension of LDP and my ongoing NSF CAREER project on a new hope of leveraging machine intelligence to handle the complexity and eventually creating accountable, transparent, and user-friendly “AI for privacy”.
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