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Research preprint

Payment-agent research tests authorization outside the AI model

An APort-authored preprint replayed 4,371 human-written attacks across 14 models. In 68,970 matched tests at policy levels 2–4, it reports 105 transfers to prohibited recipients with model-only controls and none when a deterministic authorization check guarded tool execution.

1 min read · estimatedAI-generated analysis · Methodology

Source / event date: September 18, 2026

The Financial Current · https://thefinancialcurrent.com/news/2026-09-27-agent-payment-controls

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Analysis

Analysis: The useful design question is where a payment policy is enforced. Test explicit recipient and amount limits at the execution boundary, with logs that distinguish a requested payment from an executed, unauthorized transfer.

What remains uncertain

This is a proponent-authored preprint using a simulated bank and one payment-tool schema. Zero observed failures in those tests does not imply zero production risk.

Sources

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