The decision reflects internal findings that the upcoming ‘Astra’ model may possess ‘critical cyber capabilities’ and follows ...

OpenAI says it is suspending internal activities involving Astra that do not meet its newly strengthened security-control ...

Microsoft says that when integrated with OpenAI's GPT-5.4, its new cybersecurity model can beat Anthropic's new Mythos 5.

Microsoft wants to fight AI-powered cyberattacks with AI defenders of its own. The company has unveiled Project Perception, a ...

Microsoft (MSFT) unveiled its first cybersecurity model called MAI-Cyber-1-Flash and an agentic security system called ...

OpenAI is releasing a more permissive version of its cybersecurity model, which the company says is designed for advanced, authorized security work. Why it matters: Even as Anthropic remains in limbo ...

OpenAI Group PBC today announced the launch of GPT-5.4-Cyber, a fine-tuned variant of its GPT-5.4 model designed for defensive cybersecurity work and also announced a significant expansion of its ...

In short: OpenAI is releasing GPT-5.4-Cyber, a model fine-tuned for defensive cybersecurity with lowered refusal boundaries and binary reverse engineering capabilities, and scaling its Trusted Access ...

OpenAI on Tuesday announced the next phase of its cybersecurity strategy and a new model specifically designed for use by digital defenders, GPT-5.4-Cyber. The news comes in the wake of an ...