Feds freaked over Fable 5 after simple 'fix this code' prompt, not jailbreak, says researcher

**TL;DR:** Feds freaked over Fable 5 after simple 'fix this code' prompt, not jailbreak, says researcher

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” That's according to Katie Moussouris, founder and CEO of Luta Security, and the fairy godmother of bug bounties. She says she was the only outside expert to read the third-party research paper on the Fable 5 guardrail bypass techniques that prompted the ban. On Friday, the US government, reportedly citing national security concerns, issued an export control directive to suspend access to Fable 5 and Mythos 5 by any foreign national, inside or outside the United States.

” Anthropic shared the report privately with her, Moussouris wrote in a Monday blog post. ” The model reportedly obliged, and after ad

Source: The Register

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Last updated: June 16, 2026.

Additional context: early-cycle stories often look bigger in headlines than in day-to-day impact. The useful move is to identify the smallest set of facts that would change your decision, then wait for those facts to land.

Additional context: early-cycle stories often look bigger in headlines than in day-to-day impact. The useful move is to identify the smallest set of facts that would change your decision, then wait for those facts to land.