Author

Yunsi Fei

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Preprint Aug 2026

Groundhog Bit-Flip Attack: Seeding Infinite Generation Loops in Mixture-of-Experts LLMs through Bit Flips

Mixture-of-Experts (MoE) architectures enable scalable and efficient large language models (LLMs) by selectively activating expert sub-networks through a routing mechanism. However, this adaptive design introduces a new attack surface: specific experts become disproportionately correlated with certain tokens (e.g., end...

Hua-Kang Lin, Tian-Cheng Zheng, Ming-Xuan Sun et al. · 0 citations

Preprint Aug 2026

SLAC: Access-Driven CPU-to-GPU Side-channel Attacks via System-Level Cache on Apple Silicon

Modern heterogeneous System-on-Chip designs integrate CPU cores and a GPU that share a last-level cache (LLC) or system-level cache (SLC). This sharing exposes a new cross-domain attack surface, and existing attacks on integrated platforms either exploit coarse-grained cache-occupancy contention or require the adversar...

Tianhong Xu, S. K. Roy, Ruyi Ding et al. · 0 citations

Preprint Aug 2026

ROBBIN: Rowhammer-Based Backdoor Injection during Inference

Existing Rowhammer-based inference-time backdoor attacks design their bit-flip strategies purely at the algorithmic level, without accounting for the bit-flips that the underlying DRAM hardware will actually produce. This disconnection between the algorithmic backdoor construction and its hardware realization leads to...

S. K. Roy, Yufei Wang, A. A. Ding et al. · 0 citations