Red-teaming of the Agent Payments Protocol reveals vulnerabilities to direct and indirect prompt injection, with Branded Whisper and Vault Whisper attacks enabling product ranking manipulation and sensitive data extraction.
Fundamentals of building autonomous llm agents.arXiv e-prints, pages arXiv–2510
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Whispers of Wealth: Red-Teaming Google's Agent Payments Protocol via Prompt Injection
Red-teaming of the Agent Payments Protocol reveals vulnerabilities to direct and indirect prompt injection, with Branded Whisper and Vault Whisper attacks enabling product ranking manipulation and sensitive data extraction.