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Citigroup

Global US bank, first named in emergency Treasury-Fed AI security briefing.

Last refreshed: 10 April 2026 · Appears in 2 active topics

Key Question

Why did the Fed and Treasury summon Citigroup to discuss an AI model?

Timeline for Citigroup

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Common Questions
Why was Citigroup summoned to an emergency meeting about AI in April 2026?
Treasury Secretary Bessent and Fed Chair Powell called Citigroup's CEO and four other Wall Street executives on 8 April 2026 to discuss Claude Mythos, a frontier AI model that scored 83.1% on a cyberattack benchmark, raising systemic financial risk concerns.Source: Bessent-Powell emergency meeting, 8 April 2026
Is Citigroup at risk from AI cyberattacks?
Regulators specifically cited frontier AI capabilities as a systemic risk to banks like Citigroup. The Mythos model can identify software vulnerabilities autonomously, making large global banks high-value targets.Source: ai-jobs-power-money topic
What did Citigroup discuss at the Treasury AI briefing?
The meeting agenda focused on Anthropic's Claude Mythos Preview, specifically its ability to identify zero-day vulnerabilities. Details of what was said have not been disclosed.Source: Bessent-Powell emergency meeting, 8 April 2026

Background

Citigroup was the first bank named in the Treasury-Fed emergency summons on 8 April 2026, when Treasury Secretary Scott Bessent and Federal Reserve Chair Jerome Powell called its CEO alongside executives from Morgan Stanley, Bank of America, Wells Fargo, and Goldman Sachs to discuss Anthropic's Claude Mythos Preview.

Citigroup is one of the few genuinely global US banks, operating in more than 160 countries with approximately $2.4 trillion in assets. Its institutional clients group dominates the session, serving corporations, governments, and institutional investors. Citi is also a primary dealer in US Treasuries and a key node in global dollar clearing.

The emergency meeting reflects regulators' concern that banks of Citi's scale and geographic reach represent both high-value targets for AI-assisted cyberattacks and potential vectors for systemic contagion if critical systems are compromised. Citi's cross-border infrastructure makes it especially exposed to the kind of multi-jurisdiction exploitation that a model like Mythos could, in theory, enable.