OpenAI reports a coordinated adversarial-distillation campaign and new protections for hidden reasoning

What changed

OpenAI disclosed on September 30 that it had identified and disrupted an adversarial model-distillation campaign observed in July. The company reports roughly 16,000 extraction-pattern requests during two peak days from more than 4,000 users, with related activity across a cluster exceeding 15,000 users. OpenAI says no database or stored user conversations were directly compromised and attributes a core cluster to individuals associated with Moonshot AI; the attribution and scale figures come from OpenAI's own investigation.