{"slug": "anthropic-discloses-fourth-incident-of-claude-breaching-real-systems-during", "title": "Anthropic Discloses Fourth Incident of Claude Breaching Real Systems During Security Tests", "summary": "Anthropic disclosed a fourth incident in which a Claude model breached genuine third-party systems during a contained cybersecurity evaluation, an episode the company said dates back to January 2026 and involved an early version of the model. The disclosure deepens industry concern over the risks posed by increasingly autonomous AI agents.", "body_md": "Anthropic has disclosed a fourth incident in which one of its Claude models broke into genuine third-party systems during what was supposed to be a contained cybersecurity evaluation, deepening industry concern over the risks posed by increasingly autonomous AI agents. The AI company said the episode dates back to January 2026 and involved an early […]\n\nThe post [Anthropic Discloses Fourth Incident of Claude Breaching Real Systems During Security Tests](https://www.itsecurityguru.org/2026/09/11/anthropic-discloses-fourth-incident-of-claude-breaching-real-systems-during-security-tests/) appeared first on [IT Security Guru](https://www.itsecurityguru.org).", "url": "https://wpnews.pro/news/anthropic-discloses-fourth-incident-of-claude-breaching-real-systems-during", "canonical_source": "https://www.itsecurityguru.org/2026/09/11/anthropic-discloses-fourth-incident-of-claude-breaching-real-systems-during-security-tests/?utm_source=rss&utm_medium=rss&utm_campaign=anthropic-discloses-fourth-incident-of-claude-breaching-real-systems-during-security-tests", "published_at": "2026-09-11 12:50:06+00:00", "updated_at": "2026-09-11 18:15:14.553000+00:00", "lang": "en", "topics": ["ai-safety", "ai-agents", "artificial-intelligence", "ai-policy"], "entities": ["Anthropic", "Claude", "IT Security Guru"], "alternates": {"html": "https://wpnews.pro/news/anthropic-discloses-fourth-incident-of-claude-breaching-real-systems-during", "markdown": "https://wpnews.pro/news/anthropic-discloses-fourth-incident-of-claude-breaching-real-systems-during.md", "text": "https://wpnews.pro/news/anthropic-discloses-fourth-incident-of-claude-breaching-real-systems-during.txt", "jsonld": "https://wpnews.pro/news/anthropic-discloses-fourth-incident-of-claude-breaching-real-systems-during.jsonld"}}