DefensesarXiv 2609.04767
SHAQ: Privacy-preserving retrieval in vector databases using shadow queries
Proposes SHAQ, which replaces document embeddings with shadow query embeddings to defend against embedding inversion.
- arXiv
- 2609.04767
- Published
- Layer
- Application layer
- Setting
- LLM applications
- Attacker
- Black-box
- Evaluated models
- GTR-T5 encoder, DPR
- AttacksExtraction and theft
- ComponentEmbeddings
AbstractSHAQ replaces document embeddings with shadow query embeddings.
SHAQ is a defense against EIA for cloud vector databases: instead of directly modifying document embeddings, it replaces them with shadow query embeddings.