Key Takeaways
- Anthropic unveiled Project Glasswing, collaborating with leading cybersecurity and technology companies to deploy its unreleased Mythos Preview AI model for defensive security purposes
- CrowdStrike (CRWD) stock surged 6.2% while Palo Alto Networks (PANW) stock climbed 4.9% during Tuesday’s session, with both adding roughly 2% after hours
- Despite Tuesday’s rally, PANW stock remains down 7.8% year-to-date while CRWD stock is off 9.7% in 2026
- The AI company plans to allocate up to $100 million in AI usage credits and dedicate $4 million to open-source security initiatives
- The announcement follows a sharp selloff in cybersecurity stocks last month when Anthropic first disclosed Mythos, sparking concerns about AI disrupting traditional security solutions
Tuesday delivered welcome relief for cybersecurity sector investors as Anthropic’s Project Glasswing announcement propelled both Palo Alto Networks and CrowdStrike shares significantly higher. The AI firm revealed plans to grant access to its yet-to-be-released Mythos Preview model specifically for defensive cybersecurity applications.
The collaboration brings together technology industry heavyweights — Amazon Web Services, Apple, Broadcom, Cisco, Google, JPMorgan Chase, the Linux Foundation, Microsoft, and Nvidia have all signed on alongside PANW and CRWD.
According to Anthropic, the Mythos Preview model demonstrates capabilities that exceed all but the most elite human experts when it comes to identifying and exploiting software weaknesses. The company positions the initiative as a critical effort to channel these powerful capabilities toward protection rather than attack.
The announcement marks a significant pivot from mid-March. When Fortune revealed on March 27 that Anthropic was building the Mythos model, cybersecurity stocks tumbled as investors worried that advanced AI could erode demand for conventional security products.
Tuesday’s news seemed to reverse that narrative — at least temporarily.
Palo Alto Networks, Inc., PANW
CrowdStrike shares jumped 6.2% during regular trading, while Palo Alto Networks climbed nearly 5%. Both securities added another 2% during extended trading hours. The momentum carried into Wednesday’s premarket activity.
However, the year-to-date performance remains challenging. Palo Alto Networks stock has declined 7.8% since January, while CrowdStrike stock has fallen 9.7% in 2026. Tuesday’s surge helps narrow those deficits but doesn’t eliminate them.
Anthropic’s Financial Commitment
Anthropic has pledged up to $100 million worth of AI usage credits for Project Glasswing participants. Additionally, the company will invest $4 million in open-source security projects.
These substantial commitments suggest Anthropic intends to build a genuine defensive security infrastructure rather than simply announcing a superficial partnership.
A Complex Proposition for Security Firms
For Palo Alto Networks and CrowdStrike, this initiative presents a nuanced opportunity. The upside is clear: it confirms AI-enhanced security as a viable growth market — an arena where both companies have already established strong positions.
The downside lurks in the long-term implications. The same sophisticated AI models deployed for defense could eventually automate capabilities that cybersecurity vendors currently monetize. If artificial intelligence can independently identify and neutralize threats, demand for certain traditional security products might diminish.
This fundamental tension won’t disappear overnight. But judging by Tuesday and Wednesday’s price action, investors concluded that participating in an Anthropic partnership trumps being excluded from it.
Both stocks maintained their upward momentum through Wednesday’s premarket trading following Tuesday’s closing bell.
