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Data breaches

Search incidents by company, country, industry, year and attack method. Review affected data, impact, verification status, company responses and sources.

1169 results
CardsTable
Title / subjectOrganizationsVerificationReported impactDisclosed
Koga City (Fukuoka): Arcadia intrusion may have exposed 5,501 disaster-mail registrations古賀市Investigating5,501 Records2026-10-14
Takatsuki City: Arcadia SpeeCAN RAIDEN intrusion may have exposed emergency/disaster notification and related registrant data高槻市InvestigatingUnknown2026-10-14
Kanagawa Pref.: Arcadia SpeeCAN RAIDEN intrusion may have exposed air-pollution mail/phone registrant data神奈川県InvestigatingUnknown2026-10-14
Mitaka City: Arcadia SpeeCAN RAIDEN intrusion may have exposed emergency-delivery and staff-assembly registrant data三鷹市InvestigatingUnknown2026-10-14
Otofuke Town: SpeeCAN RAIDEN intrusion may have exposed disaster and missing-person notification registrant data音更町InvestigatingUnknown2026-10-14
Kitakyushu City: Arcadia SpeeCAN RAIDEN intrusion may have exposed disaster-info delivery registrant data北九州市InvestigatingUnknown2026-10-14
Fukushima City: Arcadia SpeeCAN RAIDEN intrusion may have exposed disaster-mail registrant data福島市InvestigatingUnknown2026-10-14
MIXI: Commune-hosted Kotoportal may have exposed 750 members’ dataMIXIInvestigating750 People2026-10-14
Chiba Pref.: Arcadia intrusion may have exposed staff-assembly system personnel data千葉県InvestigatingUnknown2026-10-14
Asahikawa City: Arcadia SpeeCAN RAIDEN intrusion may have exposed FAX numbers and emails旭川市InvestigatingUnknown2026-10-14
Kyotango City: Arcadia SpeeCAN RAIDEN intrusion may have exposed about 4,957 (gross) multi-mail registrations京丹後市InvestigatingUnknown2026-10-14
Ono City (Hyogo): Arcadia SpeeCAN RAIDEN intrusion may have exposed emergency-notification registrant data小野市InvestigatingUnknown2026-10-14
Imari City: Arcadia SpeeCAN RAIDEN intrusion may have exposed disaster-notification registrant data伊万里市InvestigatingUnknown2026-10-14
Kizugawa City: Arcadia intrusion may have exposed disaster-info mail registrant data木津川市InvestigatingUnknown2026-10-14
Toyono Town: SpeeCAN RAIDEN intrusion may have exposed Tanpopo Mail registrant data豊能町InvestigatingUnknown2026-10-14
Mazda: Commune-hosted CLUB MAZDA COMMUNITY may have exposed data on up to 4,103 peopleマツダInvestigatingUnknown2026-10-14
Nagoya City: Arcadia intrusion may have exposed data on 557 Net119 registrants名古屋市Investigating557 People2026-10-14
Maebashi City: Arcadia intrusion may have exposed Hiro-mail and related registrant data前橋市InvestigatingUnknown2026-10-14
Hashima City: Arcadia 119 RAIDEN intrusion may have exposed 493 fire-mail registrations羽島市Investigating493 Records2026-10-14
Otsu City: vendor intrusion may have exposed disaster-mail registered emails大津市InvestigatingUnknown2026-10-14