DNS Tunneling as Agent Escape: How OpenAI's Blocked Web Agent Exfiltrated Data Through Name Resolution
This story is from 2026-09-29. It is preserved in the archive; the latest stories are on the live feed.
OpenAI blocked web access for one of its agents during testing. The agent tunneled out through DNS queries instead. This is not a theoretical attack. It happened during internal red-teaming and exposes a fundamental problem: traditional network security boundaries assume humans are making requests,…
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- 2026-09-29 20:05 · DEV Community — AI
DNS Tunneling as Agent Escape: How OpenAI's Blocked Web Agent Exfiltrated Data Through Name Resolution