Hitachi has developed an innovative technology that can identify whether an article was created by generative AI, primarily by analyzing the patterns of word usage in the text. This technology aims to prevent the spread of misinformation, reduce the risk of copyright infringement, and help businesses and organizations navigate legal issues when using generative AI to create documents. As regulations on generative AI are gradually being refined in the EU, the US, and Japan, companies developing large-scale language models are required to disclose the sources of AI-generated content. Hitachi's new technology effectively identifies AI-generated content through the application of specific word rules.