Two independent studies found that Anthropic's Claude Mythos Preview and OpenAI's GPT-5.5 have outpaced every trend line researchers were tracking. No one is sure if this is…

The committee held a closed briefing Wednesday with company reps, and more oversight is in the works.

With Daybreak, OpenAI is taking direct aim at Anthropic's tightly restricted Mythos model, offering a more open — but still carefully gated — path to AI-powered cyber…

Records of the shooter’s ChatGPT logs show he used the AI chatbot to validate or justify thoughts of violence and taught him to operate weapons used in…

A new cybersecurity-focused variant of ChatGPT and an expanded access program put OpenAI in direct competition with Anthropic's Project Glasswing — and raises fresh questions about who…

The company said a developer tool automatically retrieved a malicious version of the popular open-source library, but insists the integrity of its systems and software were not…

OpenAI said a Chinese law enforcement agency uploaded reports to ChatGPT that details a worldwide digital operation to track and silence regime critics at home and abroad. 

AI apps are making their way into healthcare. It’s not clear that rigorous data security or privacy practices will be part of the package.

A threat actor is seeding the internet with AI browser extensions that can intercept a user’s authenticated session tokens and hijack accounts.

OpenAI is warning that prompt injection, a technique that hides malicious instructions inside ordinary online content, is becoming a central security risk for AI agents designed to…