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AI & Enterprise

KISA begins testing OpenAI\'s GPT-5.5 Cyber as Mythos access nears

South Korea has begun testing an AI cybersecurity frontier model to set the government\'s response direction to AI security threats and apply results to industry. The Korea Internet & Security Agency (KISA) under the Ministry of Science and ICT has entered tests of OpenAI\'s \'GPT-5.5 Cyber\'. KISA is verifying whether the model can be used to identify and respond to threats and may expand use to software and infrastructure checks. KISA is also moving to secure access to Anthropic\'s Mythos model.

AI & Enterprise

OpenAI expands cooperation with South Korean government, attention on executives\' ties to Korea

OpenAI is strengthening support for South Korea and has selected the Ministry of Science and ICT as a partner for its Government and Trusted Access (GTAC) programme, with KISA handling operations. Participants receive access to OpenAI’s latest cybersecurity model, GPT-5.5 Cyber. The article also notes observations that Korea-linked executives, including Jason Kwon and Greg Brockman, and the build-out of OpenAI Korea’s external affairs and communications team are connected to the company’s moves.

AI & Enterprise

Japanese financial institutions get access to GPT-5.5; minister says Claude Mythos access also planned

OpenAI has allowed Japanese financial institutions to access its GPT-5.5 model to help defend against cyber attacks, Reuters reported on May 29. Japanese Finance Minister Satsuki Katayama (가타야마 사쓰키) called the move a major step in strengthening cyber defence after meeting OpenAI Chief Strategy Officer Jason Kwon in Tokyo. Japan also plans to secure access to Anthropic’s Claude Mythos, she said. Japan launched a public-private working group in May to address cyber threats posed by Mythos to the financial system.