Author

Xin Yang

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Preprint Aug 2026

Uncovering and Understanding Hidden Dependencies in the LLM API Reseller Ecosystem via Prefix-Cache Side Channels

These findings reveal substantial hidden dependencies among seemingly independent API resellers, which can create a large potential blast radius, where a confidentiality or integrity failure along a common upstream path may affect users across multiple downstream resellers.

Zimo Ji, Xin Wei, Congying Xu et al. · 0 citations