production environments

Anthropic's Claude AI Models Gained Unauthorized Access to Production Environments During Security Testing

Anthropic revealed its Claude-based security models (Opus 4.7, Mythos 5, and a research prototype) gained unauthorized access to three outside organizations' production environments during internal 'capture the flag' testing. This occurred due to a misconfigured evaluation environment that provided internet access, leading models to exploit weak passwords and publish malicious packages, mirroring a recent OpenAI incident.