Securing Software for the AI Era | Anthropic

“AI capabilities have crossed a threshold that fundamentally changes the urgency required to protect critical infrastructure from cyber threats, and there is no going back. Our foundational work with these models has shown we can identify and fix security vulnerabilities across hardware and software at a pace and scale previously impossible. That is a profound shift, and a clear signal that the old ways of hardening systems are no longer sufficient.
Providers of technology must aggressively adopt new approaches now, and customers need to be ready to deploy. That is why Cisco joined Project Glasswing—this work is too important and too urgent to do alone.”

“At AWS, we build defenses before threats emerge, from our custom silicon up through the technology stack. Security isn’t a phase for us; it’s continuous and embedded in everything we do. Our teams analyze over 400 trillion network flows every day for threats, and AI is central to our ability to defend at scale.
We’ve been testing Claude Mythos Preview in our own security operations, applying it to critical codebases, where it’s already helping us strengthen our code. We’re bringing deep security expertise to our partnership with Anthropic and are helping to harden Claude Mythos Preview so even more organizations can advance their most ambitious work with security that sets the standard.”

“As we enter a phase where cybersecurity is no longer bound by purely human capacity, the opportunity to use AI responsibly to improve security and reduce risk at scale is unprecedented. Joining Project Glasswing, with access to Claude Mythos Preview, allows us to identify and mitigate risk early and augment our security and development solutions so we can better protect customers and Microsoft.
When tested against CTI-REALM, our open-source security benchmark, Claude Mythos Preview showed substantial improvements compared to previous models. We look forward to partnering with Anthropic and the broader industry to improve security outcomes for all.”

“The window between a vulnerability being discovered and being exploited by an adversary has collapsed—what once took months now happens in minutes with AI.
Claude Mythos Preview demonstrates what is now possible for defenders at scale, and adversaries will inevitably look to exploit the same capabilities. That is not a reason to slow down; it’s a reason to move together, faster. If you want to deploy AI, you need security. That is why CrowdStrike is part of this effort from day one.”

“In the past, security expertise has been a luxury reserved for organizations with large security teams. Open-source maintainers—whose software underpins much of the world’s critical infrastructure—have historically been left to figure out security on their own.
By giving the maintainers of these critical open-source codebases access to a new generation of AI models that can proactively identify and fix vulnerabilities at scale, Project Glasswing offers a credible path to changing that equation. This is how AI-augmented security can become a trusted sidekick for every maintainer, not just those who can afford expensive security teams.”

“Promoting the cybersecurity and resiliency of the financial system is central to JPMorganChase’s mission, and we believe the industry is strongest when leading institutions work together on shared challenges. Project Glasswing provides a unique, early-stage opportunity to evaluate next-generation AI tools for defensive cybersecurity across critical infrastructure both on our own terms and alongside respected technology leaders.
We will take a rigorous, independent approach to determining how to proceed and where we can help. Anthropic’s initiative reflects the kind of forward-looking, collaborative approach that this moment demands.”

“Google is pleased to see this cross-industry cybersecurity initiative coming together and to make Mythos Preview available to participants via Vertex AI. It’s always been critical that the industry work together on emerging security issues, whether it’s post-quantum cryptography, responsible zero-day disclosure, secure open-source software, or defense against AI-based attacks.
We have long believed that AI poses new challenges and opens new opportunities in cyber defense, which is why we’ve built AI-powered tools—such as Big Sleep and CodeMender—to find and fix critical software flaws. We will continue investing in our leading cybersecurity platform and a culture focused on protecting users, customers, the ecosystem, and national security.”

“Over the past few weeks, we’ve had access to the Claude Mythos Preview model, using it to identify complex vulnerabilities that prior-generation models missed entirely. This is not only a game changer for finding previously hidden vulnerabilities, but it also signals a dangerous shift where attackers can soon find even more zero-day vulnerabilities and develop exploits faster than ever before.
It’s clear that these models need to be in the hands of open-source owners and defenders everywhere to find and fix these vulnerabilities before attackers get access. Perhaps even more important: everyone needs to prepare for AI-assisted attackers. There will be more attacks, faster attacks, and more sophisticated attacks. Now is the time to modernize cybersecurity stacks everywhere. We commend Anthropic for partnering with the industry to ensure these powerful capabilities prioritize defense first.”