Your Agent Just Paid for Nothing: 6 Attacks on x402 Payments - Ishween Kaur, SoFi
Six x402 attack demonstrations show why agents need explicit payment limits, replay protection, seller checks and end-to-end traces before they can spend safely.
📌 One-Sentence Summary 六组 x402 攻击实验说明,智能体花钱前需要明确的支付限制、防重放机制、卖家校验与端到端追踪。 📝 Summary Ishween Kaur 从 20 种 x402 智能体支付攻击实验中,展开六种典型失败。价格操纵利用卖家标价与支付请求头之间的差异,因此必须核对金额、钱包与网络。重复使用同一支付编号可能多次通过签名验证,却只有一次真正结算;共享状态与
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Six x402 attack demonstrations show why agents need explicit payment limits, replay protection, seller checks and end-to-end traces before they can spend safely.