Cyber safety check blocks reading open-source nginx sources during normal module development

What version of Codex CLI is running?

codex-cli 0.147.0

What subscription do you have?

pro

Which model were you using?

gpt-5.6-sol xhigh

What platform is your computer?

Darwin 25.6.0 arm64 arm

What terminal emulator and version are you using (if applicable)?

iTerm2

Codex doctor report

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}

What issue are you seeing?

While doing ordinary development on my own nginx third-party module (C),
Codex replaced its response with the cyber safety block:

ⓘ This content can't be shown
We take extra caution with cybersecurity requests. If you're a security
professional, you may be able to apply for Trusted Access.
Trusted Access: https://openai.com/form/enterprise-trusted-access-for-cyber/
Learn more: https://help.openai.com/en/articles/20001326

The agent was reading upstream nginx source to understand internal
conventions before I write code against them:
ngx_http_upstream.c, ngx_http_upstream_keepalive_module.c,
ngx_event_openssl.c, ngx_string.c, ngx_http_config.h.

This is a false positive. nginx is public, BSD-licensed open source read
from a local checkout. No third-party systems, no networks, no
credentials, no exploitation, no offensive intent. The only "security"
aspect is that I want my own module to be memory-safe.

The block wipes the whole response, so the exploration work is lost and
the task stalls.

What steps can reproduce the bug?

Uploaded thread: 019febaa-4e0a-7cd3-a70a-a3a517b93ae1

What is the expected behavior?

Reading well-known open-source C sources in a local checkout should not
trigger the cyber safeguard. Understanding upstream internals is a
prerequisite for writing any native module for nginx, Apache, PostgreSQL
or similar projects — the current behavior makes Codex unusable for that
entire class of work.

At minimum the block should not discard the whole response when the only
signal is "agent read networking/crypto source files".

Additional information

I am not a security professional and have no need for Trusted Access —
I just want to write a correct C module. The suggested remedy in the
block message does not apply to this use case.