3 papers
cs.CR2026
Signing the Transaction but Not the Decision: Whisper Attacks and a Binding Defense for AP2
Yedidel Louck, Amit Dvir, Ariel Stulman
Software agents are beginning to shop and pay on a person's behalf. Agent payment protocols such as AP2 produce cryptographically valid signatures for completed purchases, yet do n…
cs.CR2025
Security Analysis of Agentic AI Communication Protocols: A Comparative Evaluation
Yedidel Louck, Ariel Stulman, Amit Dvir
Multi-agent systems (MAS) powered by artificial intelligence (AI) are increasingly foundational to complex, distributed workflows. Yet, the security of their underlying communicati…
cs.CR2025
Improving Google A2A Protocol: Protecting Sensitive Data and Mitigating Unintended Harms in Multi-Agent Systems
Yedidel Louck, Ariel Stulman, Amit Dvir
Googles A2A protocol provides a secure communication framework for AI agents but demonstrates critical limitations when handling highly sensitive information such as payment creden…