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CIPL: A Channel-Aware Framework for Recoverable Privacy Leakage in LLM Agents

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Merged summary

TL;DR - CIPL is a channel-aware framework for measuring sensitive information that attackers can recover from black-box LLM agents, rather than merely detecting internal exposure. It enables consistent comparisons across memory-, retrieval-, tool-, and live-agent pipelines.

  • Models leakage through source, selection, assembly, execution, observation, and extraction stages under a shared protocol.
  • Memory leakage was nearly saturated, while retrieval-mediated leakage was often partial.
  • Tool-mediated and live-agent leakage varied with observation surface, prompt-channel alignment, retrieval depth, and provider behavior.
  • Semantic auditing identified useful disclosures missed by canonical exact-match metrics.

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CIPL: A Channel-Aware Framework for Recoverable Privacy Leakage in LLM Agents

arXiv cs.CR Tao Huang, Guosen Wu, Guolong Zheng, Jiayang Meng, Chen Hou, Xu Yang, Xuechao Yang, Feng Xia 2026-09-18 arXiv:2609.21686
Public signals Semantic Scholar citations 0 · Semantic Scholar influential citations 0
Providers: Hugging Face · N/A OpenAlex · N/A Publisher · N/A Semantic Scholar · Citations 0 · Influential citations 0 X · N/A Fetched 2026-09-22 14:18:38.673661 UTC

TL;DR - CIPL is a channel-aware framework for measuring sensitive information that attackers can recover from black-box LLM agents, rather than merely detecting internal exposure. It enables consistent comparisons across memory-, retrieval-, tool-, and live-agent pipelines.

  • Models leakage through source, selection, assembly, execution, observation, and extraction stages under a shared protocol.
  • Memory leakage was nearly saturated, while retrieval-mediated leakage was often partial.
  • Tool-mediated and live-agent leakage varied with observation surface, prompt-channel alignment, retrieval depth, and provider behavior.
  • Semantic auditing identified useful disclosures missed by canonical exact-match metrics.
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