Japan Sees Sharp Rise in Web Data Leaks Amid Mobile API Abuse and Metabase Attacks

Japan has experienced a significant increase in web data leaks, attributed to the abuse of mobile app APIs and exploitation of known software vulnerabilities. The JPCERT Coordination Center issued an alert on October 8, 2026, based on incident reports and other information. The alert does not identify the attackers or the affected organizations. The center's warning suggests that attackers are targeting Japanese organizations using these tactics. The alert is intended to inform and warn based on reported incidents.