Update
GMO Cybersecurity Links Chinese AI Tool to Japanese Breaches
GMO Cybersecurity, a Japanese cybersecurity firm, has confirmed traces of ARTEX, an AI penetration-testing tool developed in China, on servers used to attack Japanese companies. The tool targeted around 20 Japanese companies, with nine in the same sector reporting data breaches between September and October 2026. GMO Cybersecurity identified six additional AI-based attack infrastructures aimed at Japanese targets, including retailers, schools, financial firms, and media organizations. The tool was also linked to attacks on South Korean banks in late September 2026.