Author

Jaehoo Kim

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Preprint Aug 2026

Proof-of-Execution Memory: Defending LLM Agents Against Forged-Reasoning Attacks by Verifying What Actually Happened

Proof-of-Execution Memory (PoEM), which does not inspect memory at all, is proposed, which withstands attacks aimed at itself, adds microseconds of overhead, and works unchanged in a real LangChain agent.

Md Habibur Rahman, Jaehoo Kim · 2 citations

Preprint Aug 2026

The Framing Gap: Indirect Prompt-Injection Exfiltration Defeats Surface-Level Defenses in Tool-Using Agents

A tool-using LLM agent that reads attacker-controlled web content while holding a secret faces indirect prompt injection: the content may make it exfiltrate the secret, which may make it exfiltrate the secret.

Md Habibur Rahman, Jaehoo Kim · 0 citations