₿ **OpenAI's GPT-5.5 Matches Claude Mythos in Cyberattack Capabilities: AI Security Institute**

OpenAI's GPT-5.5 is the second AI system to complete a simulated corporate network intrusion end-to-end, raising alarms.

🔗 https://decrypt.co/366371/openais-gpt-55-matches-claude-mythos-cyberattack-ai-security-institute

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