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GenAIPABench: A Benchmark for Generative AI-based Privacy Assistants

Privacy policies of websites are often lengthy and intricate. Privacy assistants assist in simplifying policies and making them more accessible and user friendly. The emergence of generative AI (genAI) offers new opportunities to build privacy …

Differentially Private Streaming Data Release under Temporal Correlations via Post-processing

The release of differentially private streaming data has been extensively studied, yet striking a good balance between privacy and utility on temporally correlated data in the stream remains an open problem. Existing works focus on enhancing privacy …

User Customizable and Robust Geo-Indistinguishability for Location Privacy

Location obfuscation functions generated by existing systems for ensuring location privacy are monolithic and do not allow users to customize their obfuscation range. This can lead to the user being mapped in undesirable locations (e.g., shady …

Don't Be a Tattle-Tale: Preventing Leakages through Data Dependencies on Access Control Protected Data

We study the problem of answering queries when (part of) the data may be sensitive and should not be leaked to the querier. Simply re- stricting the computation to non-sensitive part of the data may leak sensitive data through inference based on data …

TrafficAdaptor: An Adaptive Obfuscation Strategy for Vehicle Location Privacy Against Traffic Flow Aware Attack

One of the most popular location privacy-preserving mechanisms applied in location-based services (LBS) is location obfuscation, where mobile users are allowed to report obfuscated locations in- stead of their real locations to services. Many …

Sieve: A Middleware Approach to Scalable Access Control for Database Management Systems

Current approaches for enforcing Fine Grained Access Control (FGAC) in DBMS do not scale to scenarios when the number of access control policies are in the order of thousands. This paper identifies such a use case in the context of emerging smart …

Rafiki: A semantic and collaborative approach to community health-care in underserved areas

Community Health Workers (CHWs) act as liaisons between health-care providers and patients in underserved or un-served areas. However, the lack of information sharing and training support impedes the effectiveness of CHWs and their ability to …