{"schema_version":"onlylabs.public_signal.v1","title":"Anthropic Writing: Fable Safeguards Jailbreak Framework","description":"Anthropic writing signal with public source context, captured evidence pages, related signals, and data-business radar classification.","url":"https://onlylabs.fyi/signals/b33f0d07-e97c-4197-a307-21845ce1d84d","json_url":"https://onlylabs.fyi/signals/b33f0d07-e97c-4197-a307-21845ce1d84d/signal.json","generated_at":"2026-07-27T00:22:53.871Z","evidence_latest_fetched_at":"2026-07-03T00:02:16.664305+00:00","signal_first_seen_at":"2026-07-03T00:00:52.188059+00:00","org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab","category_label":"Frontier lab","dossier_url":"https://onlylabs.fyi/labs/anthropic","dossier_json_url":"https://onlylabs.fyi/labs/anthropic/dossier.json"},"related_urls":{"signal":"https://onlylabs.fyi/signals/b33f0d07-e97c-4197-a307-21845ce1d84d","signal_json":"https://onlylabs.fyi/signals/b33f0d07-e97c-4197-a307-21845ce1d84d/signal.json","source":"https://www.anthropic.com/news/fable-safeguards-jailbreak-framework","lab_dossier":"https://onlylabs.fyi/labs/anthropic","lab_dossier_json":"https://onlylabs.fyi/labs/anthropic/dossier.json","analysis":"https://onlylabs.fyi/analysis/anthropic","analysis_json":"https://onlylabs.fyi/analysis/anthropic/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/anthropic/evidence.json","category":"https://onlylabs.fyi/frontier","category_json":"https://onlylabs.fyi/frontier.json","category_feed":"https://onlylabs.fyi/frontier/feed.xml","category_signals_json":"https://onlylabs.fyi/signals.json","topic":"https://onlylabs.fyi/topics/talking","topic_signals_json":"https://onlylabs.fyi/topics/talking/signals.json","topic_feed":"https://onlylabs.fyi/topics/talking/feed.xml","data_business":null},"answer_pack":{"answer":"Anthropic published Fable Safeguards Jailbreak Framework. 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We’re taking this opportunity to share further information in two areas. First, we provide more information on the cybersecurity safeguards —specifically, the safety classifiers —that we launched with the model. These are the AI systems that accompany the model that detect and block dangerous (or potentially dangerous) cybersecurity uses. Here, we provide a detailed list of the types of harms Fable 5’s classifiers are, and are not, designed to prevent. Second, we lay out an early draft version of our proposed AI jailbreak severity framework , on which we’ve been working with our Glasswing partners. AI jailbreaks are unusual ways of prompting an AI model to bypass its safeguards, thus unblocking the behaviors (like dangerous or potentially dangerous cybersecurity tasks) we seek to prevent. 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