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Author

Jun Wang

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Preprint Aug 2026

Beyond Over-Refusal: Defending Indirect Prompt Injection via Latent Instruction Manifolds

AEGIS (Adaptive Ensemble Guard for Injection Shielding) extracts instruction-sensitive projectors to identify malicious instructions and leverages a Unified Multi-Layer Consensus mechanism that aggregates topologically distinct signals across the network depth.

Jia-Hao Chen, Ruiping Yin, Xinfeng Li et al. · 0 citations
Book Open access Aug 2026

The Boy Who Cried Wolf: Adversarial Misclassification of Safe Inputs as Unsafe in Multimodal Guardrails

Unsafe Semantic Distillation is proposed, which aligns adversarial perturbations with distributional representations of unsafe content rather than prompt-specific instances, and achieves 84% attack success rates, outperforming existing methods and exposing fundamental vulnerabilities in current multimodal safety architectures.

Shuo Shi, Ruiping Yin, Naen Xu et al. · 1 citation

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