4 papers
Let My Data Go: Data Brokers' Compliance with Opt-Out and Deletion Requests
Elina van Kempen, Gene Tsudik, Pragya Jhunjhunwala +1
Data brokers are a largely American phenomenon. They collect vast amounts of personal information about most adult U.S. consumers, mainly without the latter's knowledge or consent.…
Dead Men Tell No Tales: Assessing Post-Mortem Data Protection in GenAI Chatbots
Elina Van Kempen, Ismat Jarin, Chloe Georgiou
Generative AI (GenAI) systems and chatbots rely on vast corpora of consumer data. The use of such data for training GenAI has raised concerns around data ownership, copyright issue…
Consumer Beware! Exploring Data Brokers' CCPA Compliance
Elina van Kempen, Isita Bagayatkar, Pavel Frolikov +2
Data brokers collect and sell the personal information of millions of individuals, often without their knowledge or consent. The California Consumer Privacy Act (CCPA) grants consu…
FedPoP: Federated Learning Meets Proof of Participation
DevriÅ Ä°Åler, Elina van Kempen, Seoyeon Hwang +1
Federated learning (FL) offers privacy preserving, distributed machine learning, allowing clients to contribute to a global model without revealing their local data. As models incr…