OpenAI Says It Halted Campaign to Steal Model Reasoning, but Attack Persisted on Azure

OpenAI says it stopped a coordinated campaign in which more than 15,000 accounts tried to copy the hidden reasoning of its models, with some activity tied to people connected to Moonshot AI. But researchers found the same attack kept working on Microsoft Azure for weeks, even against the new GPT-6 Astra, suggesting OpenAI's protections do not extend to cloud platforms that also sell its models.