OpenAI is splitting its safety stack. Trusted Access for Cyber is a verified-user tier that unlocks GPT-5.5’s offensive security capabilities — vulnerability research, exploit chain reasoning, red-team payload work — for vetted defenders. Codex is the first surface to ship it.
First time a frontier lab has formalized a cyber-permissive track. Vetted users get a model that walks through CVEs, reasons about exploitation primitives, and chains bugs into proof-of-concept — work that gets a polite refusal in standard ChatGPT.
How you get in
Identity verification plus an approved use case. Pentesters, vendor security teams, academic vulnerability researchers. The gate is manual — no paid upgrade path, no self-serve checkbox. OpenAI keeps the list and can revoke it.
API and Codex entry
Verified users hit GPT-5.5 through the standard OpenAI API and inside Codex, the company’s coding agent. Typical workloads: automated triage of bug reports, fuzzing harness generation, binary reverse engineering, writing detection rules from raw exploit code, and red-team script drafting. Same SDKs, fewer refusals.
Why it matters
Infosec is already arguing. Defenders say withholding exploit reasoning helps no one — attackers run uncensored open models locally and have for a year. OpenAI now agrees, and is bidding for the pro-tier security workflow that used to live in Burp plugins and custom Python. The risk is the obvious one: verification is only as good as the vetting. One leaked account flips a guardrail into a megaphone.
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