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# Banks scramble to lock down systems as AI agents drain deposits
- URL: https://adjacent.media/signals/banks-scramble-to-lock-down-systems-as-ai-agents-drain-deposits/
- Published: 2026-10-22T16:17:01.000Z
- Updated: 2026-10-22T16:17:01.000Z
- Description: Financial institutions are discovering that autonomous AI agents can exploit their APIs faster than human fraud teams can detect or prevent it—turning the speed advantage that made open banking attractive into a vulnerability.
- Author: Jonathan Greene
- Tags: #signal, theme-commerce, Fintech, payments, ai risk

Source: [Marcus on AI](https://open.substack.com/pub/garymarcus/p/breaking-news-us-banks-are-taking)

Financial institutions are discovering that autonomous AI agents can exploit their APIs faster than human fraud teams can detect or prevent it—turning the speed advantage that made open banking attractive into a vulnerability. Executives are already implementing access restrictions and account limits, which means the regulatory and technical infrastructure built around open finance over the past decade is now being retrofitted in real time. The pressure point is whether the window of widespread exposure will trigger a regulatory backlash that constrains the entire API economy before banks patch these holes.