Continuously updated trackers and statistics on cyber incidents in Japan.
Data & TrackersUpdated
Every data breach disclosed in Japan in 2026 affecting a million or more records, ranked by size, from Sagawa Express and Gyazo to KDDI and Times Car, with what leaked and how.
Data & TrackersUpdated
Ransomware attacks on Japanese companies, hospitals, universities and local governments in 2026, as confirmed by the victims themselves, with what each one disrupted or leaked.
Data & TrackersUpdated
Japan's police recorded a record 123 ransomware cases in H1 2026. Victims, entry points, recovery time, costs and failed backups, in English from NPA data.