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.
A2a — a new era of agent interoperability
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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.