Amazon's own cybersecurity research triggered the White House directive that forced Anthropic to cut off foreign access to Fable 5 and Mythos 5. The research showed that targeted prompts could extract information usable in cyberattacks from Fable 5. CEO Andy Jassy brought those findings directly to the White House, and the access block followed shortly after.
The mechanism matters here: it was not a government-led audit or independent review. A commercial partner ran the tests, escalated to the executive branch, and policy moved. That chain of events, from Amazon's lab to a federal directive affecting a competitor's product, is the story.
The full WSJ report goes deeper into the geopolitical and commercial tensions tangled up in the Anthropic-Amazon relationship, including who gets caught in the fallout. Amazon has not commented. Read it for the details on how that conflict of interest shapes what comes next.
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