Free Fable letter: 100+ cybersecurity leaders push back on Anthropic export ban

More than 100 cybersecurity executives and researchers signed a Free Fable open letter urging the US to lift the export ban on Anthropic's Fable 5, arguing it disarms defenders without slowing attackers who can extract the same capability from GPT-5.5, Kimi 2.7, Opus, and Sonnet. Ex-Facebook security head Alex Stamos said the flagged jailbreak was just a proof-of-concept of a flaw that defensive teams need to patch. Signatories include security leaders tied to Adobe, Zoom, Sophos, Vercel, Veracode, and Nvidia. The letter calls for model regulation grounded in scientific evaluations, a democratic process, and transparent, fair enforcement, casting the Lutnick directive as political rather than protective.

View full digest for June 17, 2026