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#artificial intelligence Review Apr 2026

A Survey on Long-Term Memory Security in LLM Agents: Attacks, Defenses, and Governance Across the Memory Lifecycle

This analysis indicates that robust Long-Term Memory security cannot be retrofitted at retrieval or execution time alone, but must be anchored in storage-time provenance, versioning, and policy-aware retention from the outset.

Zehao Lin, Xixuan Hao, Renyu Fu et al. · 20 citations
Book Open access Aug 2026

GraTAG: Production AI Search via Graph-Based Query Decomposition and Triplet Aligned Generation with Rich Multimodal Representations

Traditional search engines struggle to synthesize fragmented information for complex queries, while generative AI search engines face challenges in relevance, comprehensiveness, and presentation. To address these limitations, we introduce Xinyu AI Search, a novel system that incorporates a query-decomposition graph to...

Bo Tang, Junyi Zhu, Ang Li et al. · 0 citations
Preprint Jul 2026

MemRetriever: Learning to Search, Reflect, and Retrieve from Long-Term Memory

Long-term memory enables personalized agents, but its value depends on retrieving the right evidence at the right time. Most memory systems use static top-k retrieval: they issue one query, return a fixed number of memories, and pass them directly to a downstream model. This approach can miss evidence distributed acros...

Ru-Ya Jiang, Chunyu Li, Zhi-Yu Li · 0 citations

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