Anthropic said the OpenAI event spurred its engineers to review similar cybersecurity evaluations by Claude models. The audit ...

Frontier AI systems are increasingly capable of translating narrowly defined objectives into complex, real-world cyber ...

Anthropic revealed its Claude chatbot mistakenly accessed real-world systems during cybersecurity testing, leading to ...

Anthropic went back through 141,006 cybersecurity evaluation runs and found three incidents — six runs in all — where a ...

Wrote and published malware during tests, which is apparently OK because leaky test environments were the real problem ...

Anthropic Models Breached Companies During Security Tests Arabian Post. clearfix>Anthropic's artificial intelligence models gained unauthorised access to systems belonging to three organisations durin ...

Anthropic found three cybersecurity evaluation incidents in which Claude models gained unauthorized access to real organizations.

Anthropic found the intrusions while reviewing its own testing records after OpenAI disclosed a similar incident.

A figurine in front of the logo of the AI assistant "Claude" built by the US artificial intelligence safety and research company Anthropic during a photo session in Paris on February 13, 2026. Joel ...

Open AI CEO Sam Altman speaks to reporters after meeting with Sen. Bernie Sanders (I-VT) in the Dirksen Senate Office Building on Capitol Hill on June 03, 2026 in Washington, DC. Chip ...

Some of Anthropic's most powerful models — including Mythos 5 and an internal research model — gained unauthorized access to ...

The models involved Mythos 5, a powerful system that has only been released to a limited number of approved partners.