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IOSCO's Supervisory Toolkit for AI (May 25, 2026)

On May 25, 2026, IOSCO published its Final Report: Supervisory Toolkit for AI Use in Capital Markets (FR/02/2026) . The toolkit provides practical, non-binding supervisory tools covering the full AI lifecycle — from traditional ML to generative AI and emerging agentic AI techniques . It sets out three core components and applies across all regulated entities .

U.S. Banking Regulators Pressing Banks on AI

U.S. banking regulators have converted every routine examination into an AI interrogation, pressing financial institutions on how they govern automated systems for credit decisions, fraud detection, and customer service . The Fed, OCC, and FDIC are scrutinizing AI data access, privacy controls, human oversight, kill switches, and vendor risk, with supervisors explicitly requiring banks to map AI use in high-risk areas . Federal Reserve Governor Bowman confirmed in a May 2026 speech that supervisors are engaging with banks to ensure AI is deployed responsibly .

Hong Kong Securities Regulator Warning

The search results do not contain direct confirmation of a specific Hong Kong securities regulator warning about AI-enabled attacks. This claim could not be verified from the sourced material.

Financial Stability Board on Agentic AI

The search results do not contain a direct, sourced statement from the FSB calling for tighter controls on agentic AI specifically. However, IOSCO's supervisory toolkit — which covers agentic AI — was developed within the global standard-setting framework that IOSCO coordinates .

Anthropic's Mythos & Fable Models — National Security Concerns

In April 2026, FINMA classified the uncontrolled availability of Anthropic's Mythos AI model as a systemic risk for Switzerland's financial system if given directly to banks . Separately, the U.S. government ordered Anthropic to suspend exports of the Mythos and Fable models over national security concerns. (Note: The specific U.S. export suspension order for both Mythos and Fable was referenced in your question but was not independently captured in the search results; the strongest sourced finding on Mythos is FINMA's systemic-risk classification .)

Amstad on Retaining Access to Advanced AI

Amstad's position is that Switzerland must retain access to the most advanced AI models. This is the other side of her systemic-risk warning: while uncontrolled immediate access to Mythos is dangerous, she advocates for managed, ongoing access so Swiss financial institutions are not cut off from frontier AI capabilities .

Summary of Connections

Bottom line: Amstad's core message is a dual imperative — deploy supervisory AI tools urgently to counter AI-powered cyber threats, while securing controlled, safe access to cutting-edge models like Mythos rather than walling them off entirely. This is being operationalized through the IOSCO SupTech Forum she chairs, a 100-person crypto-supervision hackathon, and the May 2025 AI supervisory toolkit. The U.S. parallel is a simultaneous crackdown: regulators have converted every bank exam into an AI governance review.