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Ju Jia

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#artificial intelligence Preprint Aug 2026

Let Prompts Bridge Defense Knowledge: Transferable Graph Purification via Vulnerability-Aware GPL

This work proposes a transferable graph purification scheme, named ProGAP, to bridge adversarial defense knowledge via vulnerability-aware graph prompt learning, and achieves 1%-9% improvement, and reduces the time consumption by up to 2.2x.

Shuo-Min Xue, Jing-Yuan Li, Ju Jia et al. · 0 citations
Preprint Aug 2026

ColluSkill: Adversarial Cross-Skill Composition for Evading Agent Skill Scanners

ColluSkill is proposed, a collusive multi-skill-chain attack framework that decomposes a complete malicious intent into interdependent sub-payloads embedded in independently packaged skills and employs LLM-based chain planning and scanner-feedback refinement to preserve chain-level attack semantics.

Pu-Yu Zeng, Simeng Qin, Jingzhi Li et al. · 1 citation
Preprint Aug 2026

DEFUSE: Generalizable Backdoor Defense for Self-Supervised Encoders with Generative Priors

Inspired by Bayesian posterior inference, this work reformulate backdoor detection as a representation-conditioned image likelihood estimation problem parameterized by a conditional diffusion generative model, and fine-tune a pretrained diffusion model, leveraging its generative prior to map data onto the natural image...

Tuo Chen, Jie Gui, Min-Jing Dong et al. · 0 citations

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