SignalAtlas
Share a report
Data breaches

Data breaches

Sources first · Counts reflect this database, not worldwide incident totals.

Filters

Reset
1090 results
Title / subjectOrganizationsVerificationReported impactDisclosed
Izumo City: Arcadia intrusion may have exposed Izumo disaster-mail registered emails出雲市InvestigatingUnknown2026-10-14
Makurazaki City: Arcadia intrusion may have exposed about 2,900 disaster/general-info mail registrations枕崎市InvestigatingUnknown2026-10-14
Aena: EC-app intrusion may have exposed mypage data for up to 817,215 membersアエナInvestigatingUnknown2026-10-14
Isahaya City: Arcadia SpeeCAN RAIDEN intrusion may have exposed disaster-mail registrant data諫早市InvestigatingUnknown2026-10-14
Ebetsu City: Arcadia intrusion may have exposed disaster-info service registrant data江別市InvestigatingUnknown2026-10-14
Izumisano City: Arcadia SpeeCAN RAIDEN intrusion may have exposed registration-mail and FAX registrant data泉佐野市InvestigatingUnknown2026-10-14
Fujisawa City: Arcadia SpeeCAN RAIDEN / 119RAIDEN intrusion may have exposed Fujisawa mail-magazine and fire-alert registrant data藤沢市InvestigatingUnknown2026-10-14
Nagano City: Arcadia intrusion may have exposed emails of 6,468 disaster-mail registrants長野市Investigating6,468 People2026-10-14
Niigata City: disaster-notification vendor intrusion may have exposed Niigata disaster-mail and related data新潟市InvestigatingUnknown2026-10-14
Hayama Town: Arcadia intrusion may have exposed data on 8,850 disaster-mail registrants葉山町Investigating8,850 People2026-10-14
Ichikawa City: Arcadia intrusion may have exposed data on 171 phone/FAX mass-notification registrants市川市Investigating171 People2026-10-14
Chiba City: Arcadia SpeeCAN RAIDEN intrusion may have exposed safety-mail and related registrant data千葉市InvestigatingUnknown2026-10-14
Toyokawa City: Arcadia-hosted Toyokawa Anshin Mail may have exposed 36,328 registrations豊川市Investigating36,328 Records2026-10-14
Hatsukaichi City: Arcadia SpeeCAN RAIDEN intrusion may have exposed safety-mail registrant data廿日市市InvestigatingUnknown2026-10-14
Aioi City: Arcadia SpeeCAN RAIDEN intrusion may have exposed disaster mass-notification registrant data相生市InvestigatingUnknown2026-10-14
Tokyo Chuo Ward: Arcadia intrusion may have exposed safety-mail and staff-mail registrant data中央区InvestigatingUnknown2026-10-14
Kashiwa City: Arcadia intrusion may have exposed Kashiwa mail registrant data柏市InvestigatingUnknown2026-10-14
Inami Town (Wakayama): Arcadia SpeeCAN RAIDEN intrusion may have exposed admin/disaster-mail registrant data印南町InvestigatingUnknown2026-10-14
Aomori Pref.: Arcadia SpeeCAN RAIDEN intrusion may have exposed about 700 disaster-notification registrations青森県InvestigatingUnknown2026-10-14
Chitose City: Arcadia intrusion may have exposed NET119 and fire-call registrant data千歳市InvestigatingUnknown2026-10-14