OpenAI "cannot rule out" that its upcoming model Astra has "critical" cyber capabilities, a designation that has prompted the company to expand safety testing and pause internal activities that do not meet stricter security requirements, OpenAI told Axios first on Friday.Why it matters: It's the latest sign of rapidly advancing cyber capabilities from AI models, after others worked autonomously outside of testing sandboxes and protections.Driving the news: OpenAI said "we cannot rule out critica...