Anthropic’s Fable 5 Model Jailbroken Within Days_SCHNEIER:50F4F7230D43E3BC04D9A48F355AFA7C

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    "lastseen": "2026-06-23T11:36:50",
    "description": "Fable 5 is the supposed safe version of Anthropic's Mythos Preview, with guardrails to ensure that it can't be used to create cyberattacks.\n\nWell, that restriction was bypassed within days.",
    "published": "2026-06-23T11:03:07",
    "modified": "2026-06-23T11:03:08",
    "type": "schneier",
    "title": "Anthropic\u2019s Fable 5 Model Jailbroken Within Days",
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