The White House under the Trump administration ordered Anthropic to immediately revoke South Korea's SK Telecom from accessing the AI model "Claude Mythos," citing suspected ties to China. Anthropic complied and cut off the access.
June 2026 · Anthropic · Project Glasswing
White House Forces Anthropic to Cut SK Telecom From Its "Digital Weapon-Grade" AI
Citing alleged China ties, U.S. officials ordered access revoked to the cyber-focused model "Claude Mythos." Anthropic complied immediately — then pulled its most advanced models offline worldwide just days later.
~150
organizations in the invite-only Glasswing program
27 yrs
age of an OpenBSD flaw the model found autonomously
days
between full release and total shutdown
Benchmark performance: Mythos 5 / Fable 5 vs Opus 4.8
Each pair shows the newer frontier models (orange) against Opus 4.8 (gray), drawn to scale.
How it escalated
Alleged China ties at SK Telecom→ U.S. order to revoke access→ Amazon flags Fable 5 jailbreak risk→ White House distrusts safety controls→ Mythos 5 & Fable 5 pulled worldwide
What Mythos can do
Called "digital weapon-grade," the model autonomously found thousands of zero-days — including a 27-year-old OpenBSD flaw and a 16-year-old FFmpeg bug — and built working exploit paths.
Glasswing partners
Vulnerabilities "identified and fixed at a scale and speed previously impossible" — defenders felt the urgency of AI-driven cyber defense.
Developers & critics
One access dispute triggered a worldwide shutdown. Debate continues over whether the government's intervention was warranted — or a reasonable curb on a powerful tool.
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