OpenAI has expanded its Trusted Access for Cyber (TAC) program and introduced GPT-5.4-Cyber, a cybersecurity-focused variant of its GPT-5.4 model. The update is designed to strengthen AI-powered cyber defense by giving verified security professionals structured access to advanced capabilities while maintaining strict safety safeguards. Continue reading “OpenAI rolls out GPT-5.4-Cyber to strengthen AI-powered cybersecurity defense”