Sources: US Treasury Secretary Scott Bessent and Fed Chair Jerome Powell warned bank CEOs about risks from Anthropic's Mythos at an urgent meeting on April 7

Treasury Secretary Scott Bessent and Federal Reserve Chair Jerome Powell summoned Wall Street leaders to an urgent meeting on concerns …

Bloomberg 2026-04-10

Context & Ripple Effects

The warning landed as major banks were already testing Mythos internally, making the issue less about a hypothetical banking use case than governance of active evaluations. It also became an early U.S. signal in a widening supervisory response: UK authorities were preparing warnings for financial firms, and the ECB later sought lessons from banks with access to the model.

The significance is the move from firm-level AI experimentation to coordination among central banks, finance ministries and banks around a single frontier-model risk. Anthropic's subsequent briefing to the Financial Stability Board indicates that the concern was being elevated beyond any one national market.

First-order effects

Bank CEOs face immediate pressure to review how Mythos is being tested, what systems or data it can reach, and what controls govern its use.
Treasury and the Fed place AI-model risk on the agenda of large-bank oversight, giving internal risk and security teams a stronger mandate to scrutinize deployments.

Second-order effects

Other financial regulators are likely to compare supervisory expectations and seek operational lessons; the ECB's request for lessons from banks with Mythos access shows that cross-border information-sharing is already becoming part of the response.
Banks may slow or segment frontier-model pilots until they can demonstrate controls, while model vendors face greater demand for security assurance, incident reporting and clear customer-use boundaries.

Third-order effects

If such coordination persists, frontier AI could be treated as a financial-stability dependency rather than solely a vendor or cybersecurity issue—especially where many institutions rely on the same model provider.
That would sharpen the policy focus on security risks flagged to UK financial firms and on concentration: shared models can create correlated exposures even when each bank's implementation is separately governed.

The trend: Financial regulators are moving from monitoring bank AI adoption to examining whether reliance on a small number of frontier-model providers creates shared operational and systemic risk.

Discussion

@zerohedge @zerohedge on x
*BESSENT SUMMONED WALL STREET CEOS TO DISCUSS ANTHROPIC'S MYTHOS you gotta give it to their marketing department
@j0hnwang John Wang on x
crypto new bull case: world's largest banks get hacked by claude mythos and all wealth flees onchain
@mayhem4markets @mayhem4markets on x
Powell and Bessent just met with Wall Street CEOs to warn them about Anthropic's Mythos model. The two highlighted the potential cybersecurity risks it and other future models like it could pose to the financial system. [image]
@thegeorgepu George Pu on x
Anthropic's Mythos is alarming Powell and Bessent. They just summoned top CEOs to Washington. Mythos can break into your phone, laptop, and bank. It wasn't told to. It just found ways on its own. A 27-year-old security flaw. Fixed in 10 minutes. Another survived 5 million
@dowdedward Edward Dowd on x
Love the timing [image]
@peark.es George Pearkes on bluesky
This is really impressive speed tbh. Not much gets by Powell. [image]
@bancsutherland Bancroft Sutherland on bluesky
Well, this would seemingly put less weight on the marketing strategy portion of the decision to delay the release. — www.bloomberg.com/news/article... [images]
@ljkawa Luke Kawa on bluesky
Wonder if the AI calculus becomes “12% productivity gains per employee with the tail risk of the entire organization going under for a week if Ralph is the victim of a convincing prompt injection and inadvertently sends out internal info to malicious actors” www.bloomberg.com/new…
r/politics r on reddit
Anthropic Model Scare Sparks Urgent Bessent, Powell Warning to Bank CEOs
r/cybersecurity r on reddit
Anthropic Model Scare Sparks Urgent Bessent, Powell Warning to Bank CEOs
@kenbazinet Ken Bazinet on bluesky
The news comes amid concerns that hackers could end up using such tools for figuring out passwords or cracking encryption that is intended to keep data safe, The Guardian reported. — Anthropic sparked fears when it disclosed it shared its Claude Mythos AI model with select comp…
@metacurity.com Cynthia Brumfield on bluesky
Seriously WTF? Scott Bessent is trying to warn banks away from Anthropic? — www.theguardian.com/technology/ 2...
r/technology r on reddit
US summoned bank bosses to discuss cyber risks posed by Anthropic's latest AI model
NewsMax.com Charlie McCarthy on x
Scott Bessent Warns Banks on AI Cyber Threat
@culturalfatwa @culturalfatwa on bluesky
All this — is part of the hype cycle which continously leverages fear as a marketing tool. — That said the LLMs do seem to be OKish at automatically diagnosing issues with code ..whether any good at fixing in a secure and documentaries manner is another issue.. — www.thegua…
@AnnaAnthro@mastodon.social Anna Anthro on mastodon
“Treasury Secretary Bessent and Federal Reserve Chair Powell summoned Wall Street CEOs to an urgent meeting on concerns that the latest #AI model from Anthropic PBC will usher in an era of greater cyber risk. — Bessent and Powell assembled the group at Treasury's HQ in Washingt…
@atrupar Aaron Rupar on x
Hassett: “We're taking every step we can to make sure that everybody is safe from these potential risks, including Anthropic agreeing to hold back the public release of the model until our officials have figured everything out. There's definitely a sense of urgency.” [video]
@deanwball Dean W. Ball on x
When the dust settles, Mythos and the similarly capable models that will follow it will go down as major achievements in the history of cybersecurity. The hardening they will do to all important global software is a gift from American capitalism given freely to the world, at our

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