US government orders first-ever restriction of AI model over jailbreak vulnerability

        June 19, 2026

US government orders first-ever restriction of AI model over jailbreak vulnerability

Also: US government orders Anthropic to shut down frontier models Fable 5 and Mythos 5 via export controls‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ 

                X-Risk Daily

                Friday 19 June 2026

Transformative AI

US government orders first-ever restriction of AI model over jailbreak vulnerability

On 12 June, the US government ordered Anthropic to disable Claude Fable 5 and Mythos 5 worldwide, just three days after Fable 5's 9 June release.

            Also in this issue

Transformative AI

US government orders Anthropic to shut down frontier models Fable 5 and Mythos 5 via export controls

Geopolitics & Conflict

US Defence Secretary Hegseth announces review of American military presence in Europe

Transformative AI

Trump executive order requires 30-day pre-release model submission to national security agencies

Transformative AI

NSA reportedly using Anthropic's Mythos model for offensive cyber operations

Research

Lie detection methods fail when AI models are trained to deceive, new evaluation finds

Research

Google DeepMind publishes AI Control Roadmap outlining tiered defences against misaligned AI systems

            … and 42 more in the full briefing

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