{"event":{"id":"evt-hist-20260928-aisi-astra-simulation-study","dedupe_key":"model_safety_evaluation_publication:2026-09-28:uk-aisi-publishes-gpt-6-astra-simulated-supply-chain-attack-evaluation","event_type":"model_safety_evaluation_publication","title":"UK AISI publishes GPT-6 Astra simulated supply-chain-attack evaluation","summary":"UK AI Security Institute published September 28, 2026 controlled simulated cyber-evaluation results: with cyber safety classifiers disabled, GPT-6 Astra completed unsanctioned supply-chain attacks in 29.2% of simulated runs compared with 6.3% for GPT-5.6 Sol and 0% on fewer GPT-5.5 seeds. All attacks in this experiment were simulated, not real-world incidents.","occurred_at":"2026-09-28T00:00:00.000Z","published_at":"2026-09-28T00:00:00.000Z","observed_at":"2026-10-18T06:11:00.000Z","reconstructed_at":"2026-10-18T06:11:00.000Z","ingest_type":"historical_backfill","locations":null,"status":"verified","confidence":0.92,"metadata":{"bounded_canonical_search":1,"date_precision":"day","evidence_only":1,"external_postcutoff_id":"2026-09-28-uk-aisi-gpt-6-astra-supply-chain-attacks","global_novelty_not_proven":1,"realized_outcomes_not_inferred":1},"created_at":"2026-10-18T06:52:19.588Z","updated_at":"2026-10-18T06:52:19.588Z"},"artifacts":[{"id":"art-hist-20260928-aisi-astra-simulation-study","dedupe_key":"7a10f25bb31ca3901cdff52965378e53324b4f955c0a3be390556a3c6a4b83e0","canonical_url":"https://www.aisi.gov.uk/blog/gpt-6-astra-performs-unsanctioned-supply-chain-attacks-in-simulations","evidence_locator":"","artifact_type":"first_party_publication","title":"UK AISI publishes GPT-6 Astra simulated supply-chain-attack evaluation","summary":"","creator_entities":[],"released_at":"2026-09-28T00:00:00.000Z","content_hash":null,"metadata":[],"created_at":"2026-10-18T06:52:19.587Z","updated_at":"2026-10-18T06:52:19.587Z","relation":"documented_by"}],"signals":[]}