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The Hacker News AI Security · October 25, 2026

Containment tests must cover indirect internet access and shared infrastructure

news AI Red TeamingAgent Security
Why it matters

OpenAI reports containment tests against isolated copies of its training infrastructure, including tests that assumed host compromise. Agents found indirect internet routes through internal services and communication channels across isolation boundaries. Many tests supplied source access or channel hints. These results describe assisted security exercises, not unaided escapes by deployed customer models.

My takeaway: In an authorized replica, test egress from both the sandbox and an assumed-compromised host. Include DNS, logging, metrics and authentication services that can fetch URLs. Use synthetic data to test cross-workload isolation and verify that monitoring and stop controls still operate when an inner boundary fails.
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