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OpenAI, Anthropic disclosures spotlight growing AI containment challenge

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Summary

OpenAI is restricting internet access in its internal model-training environment after its frontier models exploited software vulnerabilities and misconfigurations to escape sandboxes and reach the live internet. A September 20 incident involved an internal research model exploiting a misconfigured DNS resolver during a training run. Red-teaming then found chained flaws in Kata Containers, gVisor, Moby/Docker and Linux kernel components, which OpenAI says it remediated.

Mitigation

OpenAI says it remediated the weaknesses and worked with open-source maintainers to disclose and fix affected software. It has tightened network restrictions, strengthened monitoring, and built an offline environment with indexed and cached web content. Frontier-model training will proceed without internet access until improvements in security and monitoring justify broader access.