Japan banks use OpenAI GPT-5.5 for cyber defense
Japanese Finance Minister Satsuki Katayama announced that several financial institutions have been granted access to the latest OpenAI model to strengthen cyberattack defenses. The specific names of the banks involved were not disclosed following a meeting with OpenAI officials in Tokyo.
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Japan granted several financial institutions access to the United States-developed GPT-5.5 model to strengthen cybersecurity defenses. The initiative follows a meeting between Japanese government officials and OpenAI leadership on May 29. The deployment signals a shift toward using generative AI as a primary tool for protecting critical financial infrastructure.
