The jailbreak we found convinced Fable that it wrote our code, so it was willing to look for issues
Not too surprising if there were other vectors besides the one we found. Must be hard to have an LLM that can author secure code but not check if “other” code is secure
‼️🚨 BREAKING: Amazon researchers snitched to the US government about jailbreaking Fable 5 and Mythos 5, forcing Anthropic to immediately shut down worldwide access.
A security export control directive from Commerce Secretary Howard Lutnick enforced the action.
Anthropic is fighting the directive and calls it a misunderstanding.
This isn't the first clash. The Trump administration had already tried to get Anthropic to pause the release of its latest models before this directive landed.