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

Attackers are exploiting both insecure mobile application APIs and known, unpatched vulnerabilities in tools like Metabase to extract large volumes of personal data from Japanese organizations. The root failure is twofold: APIs exposed without adequate authentication or rate-limiting controls, and software left unpatched despite publicly disclosed critical vulnerabilities. This matters because the affected sectors — retail, membership services, and business systems — hold sensitive consumer data at scale, making each breach a significant regulatory and reputational event. Unlike ransomware, these silent exfiltration attacks may go undetected for extended periods, amplifying the total volume of data exposed. Organizations must treat API surfaces and third-party analytics tools as first-class attack vectors requiring the same rigor as core infrastructure.