# fault-injection-testing

Published articles for fault-injection-testing.

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## An Adversarial Audit Found 39 Fulfillment and Checkout Vulnerabilities in an AI-Agent Storefront

DevFeed: [An Adversarial Audit Found 39 Fulfillment and Checkout Vulnerabilities in an AI-Agent Storefront](<https://devfeed.tech/articles/i-told-an-ai-agent-to-rob-my-store-it-found-39-ways-to-do-it-59963.md>)

Original publisher: [Read original article](<https://hackernoon.com/i-told-an-ai-agent-to-rob-my-store-it-found-39-ways-to-do-it?source=rss>)

Author: keeper

Published: 2026-09-25T09:00:11Z

Content type: opinion

Language: en

Sources: [HackerNoon](<https://devfeed.tech/sources/hackernoon.md>)

Topics: [AI Agent](<https://devfeed.tech/topics/ai-agent.md>), [audit](<https://devfeed.tech/topics/audit.md>), [Security, Privacy and Abuse Prevention](<https://devfeed.tech/topics/security-privacy-and-abuse-prevention.md>), [Code](<https://devfeed.tech/topics/code.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [Model Context Protocol](<https://devfeed.tech/topics/model-context-protocol.md>), [HTTP](<https://devfeed.tech/topics/http.md>)

Tags: [agent](<https://devfeed.tech/tags/agent.md>), [agentic-commerce](<https://devfeed.tech/tags/agentic-commerce.md>), [ai](<https://devfeed.tech/tags/ai.md>), [ai-agent](<https://devfeed.tech/tags/ai-agent.md>), [ai-agent-payments](<https://devfeed.tech/tags/ai-agent-payments.md>), [audit](<https://devfeed.tech/tags/audit.md>), [code](<https://devfeed.tech/tags/code.md>), [fault-injection-testing](<https://devfeed.tech/tags/fault-injection-testing.md>), [hackernoon-top-story](<https://devfeed.tech/tags/hackernoon-top-story.md>), [http](<https://devfeed.tech/tags/http.md>), [idempotency](<https://devfeed.tech/tags/idempotency.md>), [mcp](<https://devfeed.tech/tags/mcp.md>), [mcp-payments](<https://devfeed.tech/tags/mcp-payments.md>), [transaction](<https://devfeed.tech/tags/transaction.md>), [usdc-payments-for-agents](<https://devfeed.tech/tags/usdc-payments-for-agents.md>), [validation](<https://devfeed.tech/tags/validation.md>), [x402-protocol](<https://devfeed.tech/tags/x402-protocol.md>)

### AI overview

An adversarial audit of a live storefront for AI-agent customers found 39 ways to accept payment without delivering the intended product. The findings included null-byte input bypasses that produced empty artifacts and cache keys that omitted a claim, causing corrected purchases to return an earlier result.

### Source excerpt

An adversarial audit of a live x402 agent storefront found 39 ways to take payment without delivering. None were payment bugs. Here are the four worst.