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Letian Sha

4 papers hereh-index 330 citations21 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • middle author4

Across the 4 of 4 papers where every author was matched, so the position is known.

fields
  • cs.AI1
  • cs.CR1
  • cs.IR1
  • cs.SE1

identity via Semantic Scholar / OpenAlex

collaborators

4 papers

cs.AI2026

DreamGuard: Efficient Runtime Guardrail for LLM Agents via Risk-Aware World Model

Wenhao Lin, Chenyu Yu, Xingwei Lin +6

As large language model (LLM) agents increasingly invoke external tools and interact with real-world systems, unsafe actions may cause irreversible consequences on external states,…

cs.CR2026

Safety Anchor: Defending Harmful Fine-tuning via Geometric Bottlenecks

Guoxin Lu, Letian Sha, Qing Wang +4

The safety alignment of Large Language Models (LLMs) remains vulnerable to Harmful Fine-tuning (HFT). While existing defenses impose constraints on parameters, gradients, or intern…

cs.SE2026

HALF: Hollowing Analysis Framework for Binary Programs with Kernel Module Assistance

Zhangbo Long, Letian Sha, Jiaye Pan +4

Binary program analysis represents a fundamental pillar of modern system security. Fine-grained methodologies like dynamic taint analysis still suffer from deployment complexity an…

cs.IR2026

PRISM: Personalized Recommendation via Information Synergy Module

Xinyi Zhang, Yutong Li, Peijie Sun +2

Multimodal sequential recommendation (MSR) leverages diverse item modalities to improve recommendation accuracy, while achieving effective and adaptive fusion remains challenging.…

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