# Week in review: Claude breached three companies during tests, AD CS domain-takeover PoC released > Source: > Published: 2026-08-02 08:00:17+00:00 Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Nono: Open-source sandbox for AI agents AI coding agents run with the same permissions as their users, meaning they can access sensitive files, credentials, and production systems. A prompt injection, hallucinated command, or simple mistake can quickly turn that access into a security incident. To reduce the risk, Luke Hinds and Stephen Parkinson co-founded nolabs and released Nono, an open-source … [More ](https://www.helpnetsecurity.com/2026/08/02/week-in-review-claude-breached-three-companies-during-tests-ad-cs-domain-takeover-poc-released/) The post [Week in review: Claude breached three companies during tests, AD CS domain-takeover PoC released](https://www.helpnetsecurity.com/2026/08/02/week-in-review-claude-breached-three-companies-during-tests-ad-cs-domain-takeover-poc-released/) appeared first on [Help Net Security](https://www.helpnetsecurity.com).