Author

Peng Sun

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#artificial intelligence Preprint Sep 2026

Learning Normal Diffusion Dynamics for Backdoor Defense in Text-to-Image Models

Backdoor attacks pose a serious threat to the secure deployment of text-to-image (T2I) diffusion models. Existing defenses typically detect backdoors from specific abnormal patterns in internal representations, which may limit their generalizability with the emergence of increasingly diverse attack mechanisms. In this...

Jun-Jian Li, Xiao-Long Liu, Peng Sun et al. · 1 citation

#artificial intelligence Preprint Nov 2025

Server-Enforced Watermarking in U-Shaped Split Federated Learning

Sigil, a server-enforced watermarking framework for U-SFL, defines a secret watermark constraint in the server-visible activation space and embeds the watermark into client-side models by injecting a watermark gradient into the gradients returned during training.

Zhengchunmin Dai, Jia-Xiong Tang, Peng Sun et al. · 0 citations