Large-scale incident Any 2026-10-31 07:37 Securitize Japan: platform breach leaks investor data, including up to 9,086 Marui applicants (12) 2026-10-29 Arara: Arara Message breach exposes about 77 million email addresses; count under review (42) 2026-10-28 Avance System: ANPIC safety confirmation service fully stopped after an external service was breached; later found no leak (2) 2026-10-21 RAKUS Light Cloud: blastmail intrusion leaks customer mailing data and suspends service (54) 2026-10-21 php2shell: critical flaws in PHP (608) 2026-10-19 Ymirlink: Cuenote FC mail system intrusion (32) 2026-10-16 Studio: website builder cloud intrusion puts company and public-sector form submissions at risk (73) 2026-10-13 Arcadia: SpeeCAN RAIDEN intrusion (34) 2026-10-08 Commune: Commune intrusion (28) 2026-10-07 IDC Frontier: ransomware attack on IDCF Cloud (13) 2024-05-29 Iseto: ransomware leaks client organization data (13) 2022-12-23 Fujitsu: FENICS network attack affects TKC mail (11) 2022-08-04 Showcase: form service tampering may have leaked card data from Idemitsu Credit and other customer sites (10) 2021-09-16 GR: Omni EC system intrusion leaks member and reservation data of ten retailers (11) 2021-08-20 Oriental Consultants group: ransomware on business servers (10) 2021-03-02 Landbrain: ransomware on its servers (11)
Prefecture Any Aichi Akita Aomori Chiba Ehime Fukui Fukuoka Fukushima Gifu Gunma Hiroshima Hokkaido Hyogo Ibaraki Ishikawa Iwate Kagawa Kagoshima Kanagawa Kochi Kumamoto Kyoto Mie Miyagi Miyazaki Nagano Nagasaki Nara Niigata Oita Okayama Okinawa Osaka Saga Saitama Shiga Shimane Shizuoka Tochigi Tokushima Tokyo Tottori Toyama Wakayama Yamagata Yamaguchi Yamanashi
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Organization kind Any Company Government Hospital Education Nonprofit
Employees Any Under 100 100–999 1,000–9,999 10,000 or more
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