SoftBank Group launched a cybersecurity product called "Patching as a Service" on Tuesday, designed to counter breaches enabled by artificial intelligence. The product will be rolled out in Japan through a joint venture established last November between SoftBank Corp and OpenAI. The launch deepens ties between the two firms amid growing fears for security risks posed by the latest AI capabilities. Last week, the U.S. government suspended access to OpenAI rival Anthropic's Fable 5 and Mythos 5 models to foreign nationals over national security concerns. "We want to create a system where we will be able to defend critical Japanese infrastructure," SoftBank founder and chief executive Masayoshi Son said at a presentation to enterprise clients in Tokyo. SoftBank Group is one of OpenAI's largest backers and its cumulative committed investment by the end of 2026 stands at $64.6 billion. At present there are around 50 people working on the product rollout, set to expand to around 1,000 people, SoftBank Corp chief executive Junichi Miyakawa said at the presentation.