Five Queries Are Enough: Query-Efficient and Surrogate-Free Membership Inference Attacks on RAG via Entailment

Nguyen Linh Bao Nguyen, Wanlun Ma, and Viet Vo, Swinburne University of Technology, Australia; Alsharif Abuadbba, CSIRO, Australia; Minghong Fang, University of Louisville, USA; Jun Zhang and Yang Xiang, Swinburne University of Technology, Australia