concepts/cyber-safety.md Codex Docs, 2026-02-19 20:37 UTC → 2026-04-20 06:53 UTC

1# Cyber Safety1# Cyber Safety

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3Cybersecurity safeguards and trusted access for Codex users

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5[GPT-5.3-Codex](https://openai.com/index/introducing-gpt-5-3-codex/) is the first model we are treating as High cybersecurity capability under our [Preparedness Framework](https://cdn.openai.com/pdf/18a02b5d-6b67-4cec-ab64-68cdfbddebcd/preparedness-framework-v2.pdf), which requires additional safeguards. These safeguards include training the model to refuse clearly malicious requests like stealing credentials.3[GPT-5.3-Codex](https://openai.com/index/introducing-gpt-5-3-codex/) is the first model we are treating as High cybersecurity capability under our [Preparedness Framework](https://cdn.openai.com/pdf/18a02b5d-6b67-4cec-ab64-68cdfbddebcd/preparedness-framework-v2.pdf), which requires additional safeguards. These safeguards include training the model to refuse clearly malicious requests like stealing credentials.

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7In addition to safety training, automated classifier-based monitors detect signals of suspicious cyber activity and route high-risk traffic to a less cyber-capable model (GPT-5.2). We expect a very small portion of traffic to be affected by these mitigations, and are working to refine our policies, classifiers, and in-product notifications.5In addition to safety training, automated classifier-based monitors detect signals of suspicious cyber activity and route high-risk traffic to a less cyber-capable model (GPT-5.2). We expect a very small portion of traffic to be affected by these mitigations, and are working to refine our policies, classifiers, and in-product notifications.