AI BriefingOpenAI's Windows Sandbox Gap
·2026.05.14 08:23
Key point
OpenAI built a custom Windows sandbox for Codex, revealing a gap compared to Linux.
Details
OpenAI built a custom sandbox for Windows to safely run Codex.
On Linux, they were able to leverage existing isolation tools like seccomp and bubblewrap, but on Windows they had to assemble the same level of protection themselves.
- restricted tokens
- custom users
- firewall rules
- permission changes
- multiple helper binaries
Ultimately, this case shows that AI coding agents have become powerful enough to require OS-level isolation, not just simple app permissions.
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