Large-scale incident Any 2026-11-05 09:00 NTT DOCOMO: online shop and My docomo breach leaks data on up to about 300,000 customers (2) 2026-11-05 SMBC Consumer Finance: guarantee system breach leaks income and licence numbers of up to 320,000 people (10) 2026-10-30 Securitize Japan: platform breach leaks investor data, including up to 9,086 Marui applicants (3) 2026-10-29 Arara: Arara Message breach exposes about 77 million email addresses; count under review (165) 2026-10-26 palan: intrusion through a data-analysis tool leaks data on up to 33,348 users, campaign participants and inquirers (6) 2026-10-21 RAKUS Light Cloud: blastmail intrusion leaks customer mailing data and suspends service (15) 2026-10-21 php2shell: critical flaws in PHP (54) 2026-10-19 Ymirlink: Cuenote FC mail system intrusion (6) 2026-10-16 Studio: website builder cloud intrusion puts company and public-sector form submissions at risk (15) 2026-10-13 Arcadia: SpeeCAN RAIDEN intrusion disrupts safety alerts and puts registration data at risk (6) 2026-10-08 Commune: Commune intrusion (9) 2026-10-07 IDC Frontier: ransomware attack on IDCF Cloud (6) 2022-12-23 Fujitsu: FENICS network attack affects TKC mail (3) 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 (2)
Run by
Category Any Shopping Travel and booking Payments and points Banking and investing Telecom and ISPs Cloud and hosting Business SaaS and e-mail Games and entertainment Media and books Education Health Transport Government Other
For Any For people For businesses
Clear filters