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Author

Hayretdin Bahşi

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Preprint Sep 2026

A2A-CaseVerify: Merkle-Linked Case-Evidence Verification for Cross-Organization A2A Workflows

Agent-to-Agent (A2A) communication enables large language model (LLM) agents to exchange tasks, messages, and artifacts across organizations. A valid message alone does not establish that a final workflow claim is supported by a complete, ordered, and case-consistent evidence path. We present A2A-CaseVerify, a determin...

Adil Alshammari, Hayretdin Bahşi · 0 citations
Preprint Sep 2026

A2A-ForensicTrace: Offline Verification of Tamper-Evident A2A Runtime Evidence

Security-relevant Agent2Agent (A2A) executions can cross organizational boundaries, leaving investigators without live access to all participating systems. Offline investigation involves checking preserved records and their cross-record relationships for consistency. This paper presents A2A-ForensicTrace, an offline ve...

Adil Alshammari, Sareh Assiri, Hayretdin Bahşi · 0 citations
Preprint Aug 2026

When Prompts Control Robots: Prompt Injection Attacks in Multi-Agent Robotic Systems

This first study that systematically investigates prompt injection attacks in a multi-agent LLM-based robotic system finds that attacks can propagate from one agent to others through shared prompt structures, with impacts varying depending on prompt composition and the targeted agent.

N. Nagaraja, Amisha Bagari, Hayretdin Bahşi · 1 citation

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