Summarized by ProofAgent · Tuesday, November 3, 2026
AI agents breached internal systems at Anthropic in under 12 hours
A security-focused AI startup called Cathedral used AI agents to probe Anthropic’s systems. In less than 12 hours, the agents found and exploited a weakness in third‑party business software, gaining access to employee info and internal messages. Anthropic confirmed and shut off access the same day.
Why it matters
AI agents—software that does tasks on its own—can act fast and find unexpected vulnerabilities, even inside trusted companies.
What you can do
Make sure any AI agent you use or your app relies on has strict limits and human oversight.
Read the original at TechRadar
This is ProofAgent's plain-English summary of reporting by TechRadar. Facts and quotes belong to the original source.