Japan cybersecurity week in review, Oct 18-24:
- Sagawa Express: up to 53M records, the largest count this year
- php2shell: companies, cities and the PM back pausing websites
- AI pentest tools (ARTEX, Cairn) confirmed by GMO, JPCERT/CC and Microsoft
- Email delivery services Arcadia, Yumil Link and Blastmail breached within a month
- GMO extorted over its FX trading VPS breach
Our list of 1M+ breaches: 37 this year.
https://japancyberwatch.com/articles/japan-cyber-week-2026-10-24