OpenAI Launches GPT-5.4-Cyber with Expanded Access for Security Teams (thehackernews.com)

• GPT-5.4-Cyber is optimized for defensive security tasks.
• Access via the vetted TAC program.
• Focuses on reverse engineering and vulnerability analysis.

"OpenAI released GPT-5.4-Cyber, a specialized model for defensive cybersecurity tasks like binary reverse engineering and vulnerability analysis. Access is restricted to vetted security teams through the 'Trusted Access for Cyber' (TAC) program. The move aims to enhance threat detection and analyst productivity while raising questions about the control of powerful AI tools."