Signing the Transaction but Not the Decision: Whisper Attacks and a Binding Defense for AP2

arXiv:2609.11757 · cs.CR · Submitted 2026-09-10 · Read on arXiv

cs.CR

Submitted: 2026-09-10

Updated: 2026-09-10

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Trace — 2× in this paper · explained in 2 episodes
• AP2 Verified-Intent Protection — 1× in this paper
• Agent Payment Protocols — 1× in this paper · explained in 1 episode

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