{"event":{"id":"evt-hist-20260929-anthropic-glm53-cyber-report","dedupe_key":"model_cybersecurity_evaluation_publication:2026-09-29:anthropic-publishes-glm-5-3-cyber-capability-assessment","event_type":"model_cybersecurity_evaluation_publication","title":"Anthropic publishes GLM-5.3 cyber-capability assessment","summary":"On September 29, 2026 Anthropic published a research assessment of Z.ai GLM-5.3 autonomous end-to-end exploit capabilities. The publisher evaluation and its claims about proliferation are scenario-bound; this publication does not establish a specific real-world intrusion or every future misuse event.","occurred_at":"2026-09-29T00:00:00.000Z","published_at":"2026-09-29T00:00:00.000Z","observed_at":"2026-10-18T07:00:00.000Z","reconstructed_at":"2026-10-18T07:00:00.000Z","ingest_type":"historical_backfill","locations":null,"status":"verified","confidence":0.9,"metadata":{"evidence_only":1,"global_canonical_novelty_unproven":1,"original_position":840,"publication_milestone_only":1},"created_at":"2026-10-18T07:50:58.598Z","updated_at":"2026-10-18T07:50:58.598Z"},"artifacts":[{"id":"art-hist-20260929-anthropic-glm53-cyber-report","dedupe_key":"20c450a340f84bbec6345574126a14c15c604c40e7f56dfca54af6d4cebe2df8","canonical_url":"https://www.anthropic.com/research/glm-5-3-and-the-spread-of-advanced-cyber-capabilities","evidence_locator":"","artifact_type":"original_publication","title":"Anthropic publishes GLM-5.3 cyber-capability assessment","summary":"","creator_entities":[],"released_at":"2026-09-29T00:00:00.000Z","content_hash":null,"metadata":[],"created_at":"2026-10-18T07:50:58.597Z","updated_at":"2026-10-18T07:50:58.597Z","relation":"documented_by"}],"signals":[]}