Anthropic's Mythos Preview Sparks Corporate War Rooms
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- Anthropic limited the Mythos Preview to a select group of digital infrastructure providers, including Amazon, Microsoft, Apple and Google, citing AI‑driven vulnerability exploitation risk.
- Amazon will begin rolling out patches in June‑July under Project Glasswing, joining Microsoft, Apple and Google in a coordinated update effort.
- Kyndryl Canada warns the patch surge will drive staff burnout as teams must test and deploy dozens of fixes for complex, legacy systems.
- EY Canada says patches can break custom software, risking outages and revenue loss for financial services and critical‑infrastructure operators.
- Firefox was scanned with Claude Opus 4.6, revealing 22 bugs; the same code examined by Claude Mythos Preview uncovered 271 vulnerabilities.
- Project Glasswing aims to start patch deployment as early as June, targeting high‑risk systems across participating firms.
- University Health Network CTO Carl Virtanen pushes for early Mythos access to accelerate updates before hackers exploit the newly discovered flaws.
Why it matters: Canadian financial firms and critical‑infrastructure operators must patch 271 vulnerabilities by July, driving staffing surges and raising outage risk across their legacy networks in the next months.


