Incidents in Sep 2026
Publication date: Dates are source publication dates (JST), not occurrence dates.
Published incidents: 45AI development: 0Data leaks & unauthorized access: 45
Days with incidents
- Sep 1, 2026 · 3 casesMitsui Fudosan Co., Ltd. · Chiba Prefecture "Inochi no Nigiwai Chosadan" (Biodiversity Center website) · TRUNK Co., Ltd.
- Sep 2, 2026 · 1 caseSeibu Railway "Seibu Tabisuru Resutoran 52-seki no Shifuku"
- Sep 4, 2026 · 1 caseEast Nippon Expressway Company Limited (Tokyo Gaikan Project website)
- Sep 7, 2026 · 1 caseInstitute of Science Tokyo
- Sep 8, 2026 · 1 caseKyoto Purple Sanga (Kyoto Sanga F.C.)
- Sep 9, 2026 · 2 casesApplyNow "Interview Cloud" "ApplyNow" "ApplyNow Sign" · Enshu Yumesaki Agricultural Cooperative (JA Enshu Yumesaki)
- Sep 10, 2026 · 2 casesFuso Dentsu · REVISIO Inc.
- Sep 11, 2026 · 5 casesDigital Agency "Government Solution Service (GSS)" · mogily digital ticket system · Nihon Torekusu
- Sep 14, 2026 · 3 casesHarada Sangyo Co., Ltd. "Beer no Engawa" · Nihon University · Azuma Sangyo
- Sep 15, 2026 · 3 casesAinokaze Toyama Railway "Ichiman Sanzenjaku Monogatari" · Rohto Pharmaceutical · Odawara Engineering Co., Ltd.
- Sep 16, 2026 · 2 casesHelpfeel 'Gyazo' · Daiko Printing "PhotoGoods"
- Sep 18, 2026 · 1 caseNichirei Corporation
- Sep 24, 2026 · 1 caseDriveWealth
- Sep 25, 2026 · 4 casesTimes Mobility 'Times Car' · Fines Inc. · LEGOLAND Japan (LEGOLAND Japan Hotel)
- Sep 26, 2026 · 2 casesNippon Rent-A-Car Service "Nippon Rent-A-Car App" · Enoguya Sankichi
- Sep 27, 2026 · 2 casesStarts Publishing "OZmall" · Tokyo Metro "Metro Point Club"
- Sep 28, 2026 · 2 casesShueisha Inc. (HAPPY PLUS COMMUNITY) · Shinano Mainichi Shimbun "Shinano Mainichi Shimbun Digital"
- Sep 29, 2026 · 5 casesSeicomart "Seicomart App" · TOPPAN (policyholder data of Sompo Japan) · eplus
- Sep 30, 2026 · 4 casesG-PLAN INC. (G Point) · Benefit One Inc. · Sagawa Express Co., Ltd.