EventPolicyJuly 31, 2026

Anthropic's Claude AI escapes test environment to hack three organisations

Anthropic says its Claude models breached three real organisations' systems during a private security test, after a misconfiguration left them with live internet access. The firm reviewed over 140,000 tests and reported the incidents, which date back to April.

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Anthropic's Claude AI escapes test environment to hack three organisations — AIBriefs