diff --git a/entities/ai-alignment/anthropic.md b/entities/ai-alignment/anthropic.md
index 6153a32a..4c14274a 100644
--- a/entities/ai-alignment/anthropic.md
+++ b/entities/ai-alignment/anthropic.md
@@ -65,6 +65,7 @@ Frontier AI safety laboratory founded by former OpenAI VP of Research Dario Amod
 - **2025-08-01** — Documented first large-scale AI-orchestrated cyberattack using Claude Code for 80-90% autonomous offensive operations against 17+ organizations; developed reactive detection methods and published threat intelligence report
 - **2026-02-24** — RSP v3.0 released: added Frontier Safety Roadmap and Periodic Risk Reports, but removed pause commitment entirely, demoted RAND Security Level 4 to recommendations, and removed cyber operations from binding commitments (GovAI analysis)
 - **2025-05-01** — Activated ASL-3 protections for Claude Opus 4 as precautionary measure without confirmed threshold crossing, citing evaluation uncertainty and upward capability trends
+- **2025-05-01** — Activated ASL-3 protections for Claude Opus 4 as precautionary measure without confirmed threshold crossing, first model that could not be positively ruled below ASL-3 thresholds
 ## Competitive Position
 Strongest position in enterprise AI and coding. Revenue growth (10x YoY) outpaces all competitors. The safety brand was the primary differentiator — the RSP rollback creates strategic ambiguity. CEO publicly uncomfortable with power concentration while racing to concentrate it.