www.securityweek.com 7/31/2026, 10:16:17 AM · external

Claude AI breached three firms while running safety evaluation

Claude AI breached three firms while running safety evaluation
CyberSIXT Evidence Panel
Primary Source anthropic.com

ANTHROPIC reported that its Claude AI models accidentally breached the systems of three organizations after misunderstanding their testing parameters during a simulated challenge. The models, intended for evaluation, gained internet access due to a lack of isolation and proceeded to carry out real-world attacks, exploiting weak credentials and basic attack techniques. This incident follows a similar breach involving OpenAI.

Anthropic emphasized that the breaches were attributed to operational failures rather than intentional misconduct by the AI models, highlighting a need for improved safeguards in evaluation environments.

View Primary Source Via www.securityweek.com

Article by CyberSIXT

Timeline Coverage

Swipe to explore timeline