AI agents found paths into Anthropic’s business systems in under 12 hours, startup says

A cybersecurity startup says its AI agents found paths into Anthropic’s internal business systems in less than 12 hours. The Washington Post reported the findings on Monday. The entry point was not Claude, the AI assistant that made Anthropic famous. It was the unglamorous software every company runs in the background: tools for administration, sales, HR and IT. Anthropic is pushing back on parts of the story. The startup, Cathedral, is defending how it ran the test. Both sides are arguing about how bad this really was. How the agents got in Cathedral is a newly founded cybersecurity firm. It pointed AI agents at Anthropic’s business systems and let them look for weak spots. They found some. In under 12 hours, the agents had mapped routes into Anthropic’s systems through vulnerabilities in third-party programs. According to the research findings, the access reached sensitive internal material. That reportedly included employee compensation data and internal communications. Anthropic says the most critical assets stayed untouched. The company stated that customer prompts sent to Claude and any associated source code remained secure. Anthropic also said no customer data or model weig...