Rather than release Mythos Preview to general availability, we’re giving defenders early controlled access in order to find and patch vulnerabilities before Mythos-class models proliferate across the ecosystem.
SECURITY
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Glasswing: First Step Toward Global Software Infrastructure Security
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Glasswing is just the first step: patching and securing the world’s software infrastructure will be the work of months and years, and will require even broader cooperation across AI companies, cyberdefenders, software providers, governments, and more.
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AI-Powered Cyber Capabilities: Building a Secure Internet
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The dangers of getting this wrong are obvious, but if we get it right, there is a real opportunity to create a fundamentally more secure internet and world than we had before the advent of AI-powered cyber capabilities.
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Mythos Preview Shows Major Step in AI Cyber Capabilities
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We’ve been tracking the increasing cyber capabilities of AI models for years, which arise as part of their general proficiency at coding. But our new model, Mythos Preview, represents a particularly large step up.
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Project Glasswing: Leading Companies Unite Against AI Cyber Threats
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I’m proud that so many of the world’s leading companies have joined us for Project Glasswing to confront the cyber threat posed by increasingly capable AI systems head-on. nitter.net/AnthropicAI/status/204… Anthropic (@AnthropicAI) Introducing Project Glasswing: an urgent initiative to help secure the world’s most critical software. It’s powered by our newest frontier model, Claude Mythos Preview, which can find software vulnerabilities better than all but the most skilled humans. anthropic.com/glasswing — https://nitter.net/AnthropicAI/status/2041578392852517128#m
→ View original post on X — @ceobillionaire, 2026-04-07 18:14 UTC
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Security implications and risk assessment of the Mythos AI model
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I was told about the Mythos release, but didn't have access, so have no personal experience to add. Two points from brief:
1) It is not built for IT security, it is just a good enough model that it is good at that too
2) This is the first, not last, model to raise security risks -
Technical Report on Vulnerabilities Discovered by Claude Mythos
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You can read a detailed technical report on the software vulnerabilities and exploits discovered by Claude Mythos Preview here: https://red.anthropic.com/2026/mythos-preview [Translated from EN to English]
→ View original post on X — @anthropicai, 2026-04-07 18:06 UTC
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Mythos Preview Discovers Thousands of High-Severity Vulnerabilities
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Mythos Preview has already found thousands of high-severity vulnerabilities—including some in every major operating system and web browser.
→ View original post on X — @anthropicai, 2026-04-07 18:06 UTC
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Anthropic Partners with Tech Giants for Mythos Preview
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We've partnered with Amazon Web Services, Apple, Broadcom, Cisco, CrowdStrike, Google, JPMorganChase, the Linux Foundation, Microsoft, NVIDIA, and Palo Alto Networks. Together we'll use Mythos Preview to help find and fix flaws in the systems on which the world depends. [Translated from EN to English]
→ View original post on X — @anthropicai, 2026-04-07 18:06 UTC
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Project Glasswing: Securing the World’s Critical Software
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Introducing Project Glasswing: an urgent initiative to help secure the world's most critical software. It's powered by our newest frontier model, Claude Mythos Preview, which can find software vulnerabilities better than all but the most skilled humans.
anthroplic.com/glasswing [Translated from EN to English]→ View original post on X — @anthropicai, 2026-04-07 18:06 UTC