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Disclosed Oct 15, 2026. 119RAIDEN may have exposed emails for 409 fire-corps, 25 city staff and 22 fire-station staff. Subsets not summed.
Disclosed Oct 14, 2026. Unauthorized access to the disaster mass-notification service operator may have exposed personal data. Scope under investigation; notice states outflow not confirmed at publication. No headcount.
Disclosed Oct 14, 2026. About 900 staff emergency-assembly mail records (name/email etc.) may have leaked. “About” → blank. No public impact.
Possible data leak: Disclosed Oct 14, 2026. Arcadia intrusion targets fire-corps contact-mail registrants; disaster mail and staff-assembly noted separately. No headcount.
Disclosed around Oct 14, 2026 (intrusion confirmed Oct 13). Arcadia-operated Izumo disaster mail may have exposed registered emails. No headcount.
First disclosed Oct 14, 2026 (page updated Oct 26). Arcadia-hosted server intrusion may have exposed about 2,900 records (name/email/district). “About” → blank. Reported to PPC on Oct 16.
Disclosed Oct 14, 2026. Log analysis at 05:58 Oct 13 found illicit mypage viewing. Up to 817,215 app members (not LINE/Amazon/Rakuten-only) may have had name/address/phone/email/DOB/sex/occupation/shipping and card last-4/expiry/name viewed. Full card numbers, passwords and purchase actions not leaked/not performed.
Disclosed around Oct 14, 2026 (updated Oct 16). Tachikawa Mimamori Mail (SpeeCAN RAIDEN/Arcadia) emergency-stopped. Possible exposure: email, town name, preferred categories. No headcount.
Disclosed Oct 14, 2026. Per Arcadia report, disaster/missing-person/after-school/nursery/fire-corps/staff-assembly registrations (name/email/phone-FAX/LINE ID/DOB etc.) may have leaked. No headcount.
Disclosed around Oct 14, 2026 (vendor report Oct 13). Arcadia SpeeCAN RAIDEN intrusion may have exposed registered emails and FAX numbers. No headcount.
Disclosed Oct 14, 2026. Possible exposure of 172 phone/FAX delivery, 133 RAIDEN119 fire-network, and 9 NET119 records (notice says still unconfirmed). Subsets not summed → blank.
Disclosed around Oct 14, 2026. Arcadia intrusion affecting Oita disaster mail etc. may have exposed personal data including emails. No headcount.
Disclosed Oct 14, 2026 (page updated Oct 19). Possible personal-data leak via Arcadia under investigation. Disaster-info service resumed at 12:00 Oct 16. No headcount.
Disclosed Oct 14, 2026 (PDF body read). About 2,024 people across eight wards (name/phone/email/FAX etc., varies by ward) may have leaked. “About”/subsets → blank.
Disclosed Oct 14, 2026. SpeeCAN RAIDEN (Arcadia) emergency stop; registration mail (emails) and FAX (name/phone/FAX) may have leaked. No headcount.
Disclosed Oct 14, 2026. Arcadia-operated Suzuka disaster mail may have exposed emails of current registrants and former Melmoni registrants. No headcount.
Disclosed Oct 14, 2026. Arcadia intrusion may have exposed disaster-mail (765), FAX delivery (13) and phone delivery (34) registrants. Subsets not summed.
First notice Oct 14, 2026 (PDF body read). Arcadia SpeeCAN RAIDEN intrusion (detected Oct 11) may have exposed Fujisawa disaster-navi 2,353 / health-navi 1,202 / PR digest 1,416 / assembly notice 661 / staff-assembly 1,428 (city aggregate 7,060 includes duplicates → blank). Oct 15 follow-up: fire 119RAIDEN 1,009 registrant records (name/email/phone) and 1,443 fire-dispatch message bodies may also have leaked.
Disclosed Oct 14, 2026. Possible exposure of 1,855 Uenohara admin-disaster emails, 32 phone/FAX disaster records, and 772 disaster-mail 119/NET119 records. Subsets not summed.
Disclosed Oct 14, 2026. Arcadia disaster phone/FAX service intrusion may have exposed registrant personal data. Other channels (Anshin Hotto Mail etc.) out of scope. No headcount.