Expanding Project Glasswing
Announcements Expanding Project Glasswing Jun 2, 2026 Project Glasswing is our collaborative effort to secure the world’s most important software. …
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Why now?
AI models continue to improve at a rapid pace. Earlier this year, Claude Mythos Preview discovered thousands of high-severity software vulnerabilities, including some in every major operating system and browser. We chose to release it to a limited set of cyber defenders through Project Glasswing to enable trusted actors to find and fix those weaknesses before anyone could exploit them. In the wrong hands, models like this could threaten the critical systems the country relies on, from hospitals to the energy grid. More capable models will bring benefits—like compressing drug discovery, develop
Donating another $20 million to Public First ActionProject Glasswing: An initial update
Announcements Project Glasswing: An initial update May 22, 2026 Last month, we launched Project Glasswing , our collaborative effort to secure the world’s most critical software before increasingly capable AI models can be turned against it. …
Donating another $20 million to Public First Action
… We chose to release it to a limited set of cyber defenders through Project Glasswing to enable trusted actors to find and fix those weaknesses before anyone could exploit them. …
What we learned mapping a year’s worth of AI-enabled cyber threats
… Related content Introducing the Services Track and Partner Hub of the Claude Partner Network Expanding Project Glasswing We’re extending Project Glasswing to approximately 150 new organizations in more than fifteen countries. …
From shortcuts to sabotage: natural emergent misalignment from reward hacking
… Project Glasswing: An initial update An early update on what we've learned from Project Glasswing.
Claude Fable 5 and Claude Mythos 5
… Expanding Project Glasswing We’re extending Project Glasswing to approximately 150 new organizations in more than fifteen countries.
Introducing the Services Track and Partner Hub of the Claude Partner Network
… Expanding Project Glasswing We’re extending Project Glasswing to approximately 150 new organizations in more than fifteen countries. …
The persona selection model
… Project Glasswing: An initial update An early update on what we've learned from Project Glasswing.
Next-generation Constitutional Classifiers: More efficient protection against universal jailbreaks
… Project Glasswing: An initial update An early update on what we've learned from Project Glasswing.
Patterns and problems in multiagent systems
… This is an approach we use ourselves—in, for example, our work scanning open-source software as part of Project Glasswing. …