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Author

Yibo Peng

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#artificial intelligence Preprint Oct 2026

SecPO: Principled Adversarial Training for Prompt Injection Security

An idealized reference model---an injection-invariant, utility-preserving oracle---can nevertheless be approximated, as its output distribution in training is interestingly accessible, which motivates a theoretically principled SecPO loss.

Si-Zhe Chen, Yi-Bo Peng, Jaewon Chang et al. · 1 citation
Preprint Aug 2026

MindMemOS: A Portable and Self-Evolving Memory Operating Layer for AI Agents

MindMemOS is presented, a portable and self-evolving memory operating layer that organizes open-world information using a unified entity property timestructure that supports scenario-adaptive memory modeling, higher-order pattern discovery, autonomous memory refinement, and continuous skill evolution.

Kaichao Liang, Yu-Qi Cui, Hao Kong et al. · 0 citations
Preprint Aug 2026

SecOPD: Mitigating Adaptive Prompt Injections by On-Policy Distillation

This paper proposes Secure On-Policy Distillation (SecOPD) that provides token-level feedback to guide defensive fine-tuning, and generalizes to domains completely unseen in training.

Yibo Peng, Long Lian, David A. Wagner et al. · 5 citations · ⚡1

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