OpenAI Expands Access to Advanced AI for Cybersecurity Testing

OpenAI announced an expansion of its Trusted Access for Cyber program to onboard verified individual defenders and security teams, and introduced GPT 5.4 Cyber, a model fine-tuned for defensive cybersecurity tasks. The initiative emphasizes identity-based verification, tiered access, and a controlled phased rollout to balance enabling defenders (binary reverse engineering, vulnerability analysis, malware investigation) while mitigating dual-use risks and maintaining safeguards where visibility is limited.