AI Security
Hit by a Cyberattack in Japan? First Steps for Individuals and Companies
In late September and early October 2026, several major South Korean banks disclosed cyberattacks. If the same happened in Japan, what should customers and companies do first? Working from primary sources, this article covers self-reporting to Japan's three credit bureaus, police and consumer hotlines, the deadlines for breach reports to the Personal Information Protection Commission, and reporting under Japan's new active cyber defense law.
2026-10-04Ryuta Hamamoto
![Why Does Personal Data Leak from GitHub? Development Security Lessons for the AI Era from Money Forward's Disclosed Incident [2026 Checklist]](/images/columns/github-incident-lessons-ai-era-development-security/cover.en.png)