TLDR
- NYSE President Lynn Martin told Congress the exchange used Anthropic’s Project Glasswing to find cybersecurity vulnerabilities
- Project Glasswing gives vetted partners early access to Anthropic’s Mythos AI model for defensive security testing
- NYSE found multiple vulnerabilities and resolved them quickly, Martin said
- Martin made the disclosure while answering questions from Rep. Bill Huizenga about coordinated cyberattack preparedness
- NYSE did not reveal what the vulnerabilities were or when they were fixed
The New York Stock Exchange has used an AI model from Anthropic to find and fix cybersecurity flaws in its systems.
NYSE USED ANTHROPIC’S MYTHOS TO FIND CYBER FLAWS
NYSE President Lynn Martin says the exchange used Anthropic’s Project Glasswing to identify multiple vulnerabilities in its cybersecurity systems and fix them quickly.
Project Glasswing gives vetted partners early access to… pic.twitter.com/6aTnhSymso
— Wall St Engine (@wallstengine) September 2, 2026
NYSE President Lynn Martin told the House Financial Services Committee on Wednesday that the exchange took part in Anthropic’s Project Glasswing as an early partner.
Martin said the technology helped the exchange locate multiple issues and resolve them quickly. She gave no details on what the vulnerabilities were or when exactly they were fixed.
What Is Project Glasswing
Project Glasswing is Anthropic’s program that gives a small number of vetted organizations early access to its Mythos AI model. The goal is to help those partners strengthen their cyber defenses.
Anthropic describes Mythos as its most capable model tier. Access is currently limited and not available to the public.
The NYSE’s parent company is Intercontinental Exchange, which also operates other financial market infrastructure globally.
How It Came Up in Congress
Martin’s disclosure came during questioning from Representative Bill Huizenga, a Republican from Michigan. He asked the exchange about its efforts to test its systems against coordinated cyberattacks.
Martin used the Project Glasswing example as evidence that the exchange is actively working to strengthen its defenses.
She did not expand on the scale of the vulnerabilities found or the resources used to fix them.
The exchange’s participation puts it among a select group of organizations that have had early access to the Mythos model for security purposes.
Cybersecurity has become a growing concern for financial market operators in recent years. Regulators and lawmakers have pushed major exchanges to demonstrate they can withstand sophisticated attacks.
The NYSE processes millions of trades each day, making it a high-value target for bad actors.
Martin’s testimony did not include any mention of active threats or breaches. The work described appears to have been proactive testing rather than a response to an attack.
Anthropic has not publicly listed which organizations are part of Project Glasswing. The NYSE’s involvement was first disclosed through Martin’s congressional testimony.
Intercontinental Exchange shares fell 1.39% on the day of the testimony.
No further comment from Anthropic or NYSE was available at the time of publication.
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