{"event":{"id":"evt-hist-2026phase27-proofpoint-ta419-ai-policy-phishing","dedupe_key":"security_intelligence_research_publication:2026-10-01:proofpoint-publishes-ta419-ai-policy-phishing-investigation","event_type":"security_intelligence_research_publication","title":"Proofpoint publishes TA419 AI-policy phishing investigation","summary":"Proofpoint publication dated Oct 1 2026 documents campaigns observed July and February 2026 impersonating AI-policy experts and an Anthropic employee. Campaign and attribution are investigator observations; not evidence Anthropic caused or operated phishing.","occurred_at":"2026-10-01T00:00:00.000Z","published_at":"2026-10-01T00:00:00.000Z","observed_at":"2026-10-18T08:30:00.000Z","reconstructed_at":"2026-10-18T08:30:00.000Z","ingest_type":"historical_backfill","locations":null,"status":"verified","confidence":0.9,"metadata":{"evidence_only":1,"global_novelty_unproven":1,"independent_outcomes_unproven":1,"original_index_position":990},"created_at":"2026-10-19T05:52:55.907Z","updated_at":"2026-10-19T05:52:55.907Z"},"artifacts":[{"id":"art-hist-2026phase27-proofpoint-ta419-ai-policy-phishing","dedupe_key":"2f5c3c39437b3abcd46c10bc58f8b89a733a0f5c4da046b999d2f8440d0bcb3e","canonical_url":"https://www.proofpoint.com/us/blog/threat-insight/hallucinating-credibility-china-aligned-ta419-impersonates-its-way-us-ai-policy","evidence_locator":"","artifact_type":"original_publication","title":"Proofpoint publishes TA419 AI-policy phishing investigation","summary":"","creator_entities":[],"released_at":"2026-10-01T00:00:00.000Z","content_hash":null,"metadata":[],"created_at":"2026-10-19T05:52:55.906Z","updated_at":"2026-10-19T05:52:55.906Z","relation":"documented_by"}],"signals":[]}