Find incidents
Filter by disclosure date, method, impact and status, or by where the affected organizations are, their industry or type and size.
38 results
Disclosed 2026-10-27Updated 2026-10-27 17:02Osaka[Investigating][Severity: Moderate]
URBAN RESEARCH: official X account taken over[Unknown][Site defacement]Organizations 1Disclosed 2026-10-23Updated 2026-10-23Osaka[Contained][Severity: Critical]
Panasonic Operational Excellence: HR data uploaded to an outside generative AI service[Insider][Data leak]Leaked 334KOrganizations 1Disclosed 2026-10-22Updated 2026-10-23Osaka[Contained][Severity: Critical]
Capcom: unauthorized access to the CAPCOM ID member service[Intrusion][Data leak]Leaked 11.8MOrganizations 1Disclosed 2026-10-21Updated 2026-10-27 19:58Aichi, Fukuoka, Hiroshima, Iwate, Kagawa, Miyagi, Nagano, Niigata, Osaka, Tochigi, Tokyo, Toyama[Investigating][Severity: Critical]
RAKUS Light Cloud: unauthorized access to the blastmail email delivery service[Intrusion][Data leak][Service outage]Organizations 345Disclosed 2026-10-21Updated 2026-10-27 17:02Osaka, Tokyo[Contained][Severity: Critical]
Future Shop: unauthorized access to its servers[Intrusion][Service outage][Data leak]Leaked 3.1MOrganizations 2Disclosed 2026-10-21Updated 2026-10-27 09:05Aichi, Akita, Aomori, Chiba, Ehime, Fukui, Fukuoka, Fukushima, Gifu, Gunma, Hiroshima, Hokkaido, Hyogo, Ibaraki, Ishikawa, Iwate, Kagawa, Kagoshima, Kanagawa, Kochi, Kumamoto, Kyoto, Mie, Miyagi, Miyazaki, Nagano, Nagasaki, Nara, Niigata, Oita, Okayama, Okinawa, Osaka, Saga, Saitama, Shiga, Shimane, Shizuoka, Tochigi, Tokushima, Tokyo, Tottori, Toyama, Wakayama, Yamagata, Yamaguchi, Yamanashi[Ongoing][Severity: Moderate]
php2shell: critical flaws in PHP[Web app exploit][Service outage]Organizations 608Disclosed 2026-10-19Updated 2026-10-27 17:02Aichi, Fukuoka, Osaka, Saitama, Tokyo[Investigating][Severity: Critical]
Ymirlink: unauthorized access to the Cuenote FC email delivery service[Web app exploit][Data leak]Leaked 51.6MOrganizations 15Disclosed 2026-10-19Updated 2026-10-23Osaka[Investigating][Severity: Critical]
Hankyu Hanshin Department Stores: unauthorized access to booking and other sites leaks H2O ID member data[Intrusion][Data leak][Service outage]Leaked 1.3MOrganizations 2Disclosed 2026-10-17Updated 2026-10-27 08:40Osaka[Investigating][Severity: Critical]
Joshin: unauthorized access[Intrusion][Data leak][Service outage]Leaked 6MOrganizations 1Disclosed 2026-10-16Updated 2026-10-27 17:02Aichi, Ishikawa, Osaka, Tokyo[Investigating][Severity: Major]
WASABI: unauthorized access to the WASABI SWITCH order and inventory system[Intrusion][Data leak]Organizations 4Disclosed 2026-10-16Updated 2026-10-24 03:56Osaka, Tokyo[Contained][Severity: Critical]
Trade Works: unauthorized access leaks IwaiCosmo Securities customer data and places orders[Intrusion][Misconfiguration][Data leak][Fraud][Financial loss]Leaked 5KOrganizations 2Disclosed 2026-10-16Updated 2026-10-22Osaka[Contained][Severity: Critical]
NTT Solmare: unauthorized access to the Comic Cmoa e-book store[Intrusion][Data leak][Service outage]Leaked 4.2MOrganizations 1Disclosed 2026-10-15Updated 2026-10-22Osaka, Tokyo[Investigating][Severity: Critical]
Daiwa Institute of Research: unauthorized access to Naito Securities' online trading system[Intrusion][Data leak]Leaked 631Organizations 2Disclosed 2026-10-13Updated 2026-10-26 12:51Aichi, Chiba, Fukuoka, Hiroshima, Hyogo, Kagoshima, Kanagawa, Oita, Okayama, Osaka, Saitama, Tochigi[Investigating][Severity: Critical]
Arcadia: unauthorized access to the SpeeCAN RAIDEN alert service[Web app exploit][Data leak][Service outage]Leaked 3.1MOrganizations 28Disclosed 2026-10-12Updated 2026-10-22Osaka[Contained][Severity: Critical]
Applabo: unauthorized access to its mail server[Credential abuse][Misconfiguration][Data leak]Organizations 1Disclosed 2026-10-09Updated 2026-10-26 18:29Aomori, Hiroshima, Osaka, Shizuoka, Tokyo[Investigating][Severity: Critical]
Commune: unauthorized access to the Commune community platform[Intrusion][Data leak]Leaked 307KOrganizations 12Disclosed 2026-10-07Updated 2026-10-27 19:58Aichi, Fukuoka, Hiroshima, Ibaraki, Osaka, Tokyo[Ongoing][Severity: Critical]
IDC Frontier: ransomware attack on IDCF Cloud[Ransomware][Intrusion][Web app exploit][Service outage][Data leak]Leaked 4MOrganizations 495Disclosed 2026-10-05Updated 2026-10-23Osaka, Tokyo[Ongoing][Severity: Critical]
Osaka Metropolitan University: attack on an NEC contractor disrupts systems and exposes information[Ransomware][Credential abuse][Service outage][Data leak]Leaked 130KOrganizations 3Disclosed 2026-10-05Updated 2026-10-22Osaka[Investigating][Severity: Critical]
Daiki Suisan: unauthorized access to its app[Intrusion][Data leak]Leaked 174.9KOrganizations 1Disclosed 2026-10-05Updated 2026-10-22Osaka[Resolved][Severity: Critical]
i-plug: student names and emails in the response data of OfferBox pages for companies[Misconfiguration][Data leak]Leaked 314KOrganizations 1Disclosed 2026-09-28Updated 2026-10-27 08:40Osaka[Contained][Severity: Moderate]
Resona Bank: microfiche with records of closed accounts lost[Lost device][Data leak]Leaked 9KOrganizations 1Disclosed 2026-09-11Updated 2026-10-22Osaka[Investigating][Severity: Major]
Rohto Pharmaceutical: unauthorized access to its mail order systems[Intrusion][Data leak]Organizations 1Disclosed 2026-08-28Updated 2026-10-23Osaka[Contained][Severity: Critical]
Kind Oal: unauthorized access to an e-commerce platform staff account[Phishing][Credential abuse][Data leak]Leaked 136.5KOrganizations 1Disclosed 2026-08-20Updated 2026-10-22Osaka[Contained][Severity: Major]
Expo 2025 Osaka, Kansai, Japan: unauthorized access to a subcontractor's Microsoft 365 account[Phishing][Credential abuse][Data leak]Organizations 1Disclosed 2026-08-17Updated 2026-10-23Osaka[Contained][Severity: Critical]
SAKURA internet: unauthorized access to rental servers and the sales system[Intrusion][Malware][Data leak]Leaked 1.4MOrganizations 1Disclosed 2026-07-26Updated 2026-10-23Osaka[Contained][Severity: Critical]
NTT SmartConnect: unauthorized access to Smile Server[Intrusion][Service outage]Organizations 1Disclosed 2026-06-22Updated 2026-10-23Osaka[Ongoing][Severity: Critical]
Faith Group: ransomware attack[Ransomware][Intrusion][Data leak][Service outage]Organizations 1Disclosed 2026-06-19Updated 2026-10-23Osaka, Tokyo[Contained][Severity: Critical]
Delightful: unauthorized access to the Meruhaikun email delivery system[Web app exploit][Intrusion][Data leak][Service outage]Leaked 1.7MOrganizations 4Disclosed 2026-06-19Updated 2026-10-22Osaka[Investigating][Severity: Major]
Gendai Butsudan: unauthorized access to its service network[Intrusion][Data leak]Organizations 1Disclosed 2026-06-04Updated 2026-10-23Osaka[Contained][Severity: Critical]
Visual Arts: unauthorized access to its cloud storage[Credential abuse][Data leak][Service outage]Leaked 6KOrganizations 1Disclosed 2026-03-23Updated 2026-10-23Osaka[Contained][Severity: Major]
Omikenshi: ransomware attack[Ransomware][Credential abuse][Data leak][Service outage]Organizations 1Disclosed 2026-03-17Updated 2026-10-23Osaka[Contained][Severity: Critical]
Medicus Shuppan, Publishers: ransomware attack[Ransomware][Credential abuse][Data leak][Service outage]Leaked 772KOrganizations 1Disclosed 2026-03-16Updated 2026-10-22Osaka[Contained][Severity: Major]
Iwatani: unauthorized access to group systems[Intrusion][Data leak]Organizations 1Disclosed 2026-02-06Updated 2026-10-23Osaka[Contained][Severity: Major]
GEX: ransomware attack[Ransomware][Data leak][Service outage]Leaked 77.6KOrganizations 1Disclosed 2026-02-04Updated 2026-10-23Osaka[Contained][Severity: Critical]
F-one: ransomware attack[Ransomware][Intrusion][Data leak][Service outage][Extortion]Leaked 170KOrganizations 1Disclosed 2026-02-03Updated 2026-10-23Osaka[Contained][Severity: Critical]
Hosokawa Micron: unauthorized cloud storage login[Credential abuse][Data leak]Leaked 1.5KOrganizations 1Disclosed 2026-01-21Updated 2026-10-23Osaka[Investigating][Severity: Major]
Suntory: unauthorized access at a PR contractor[Ransomware][Data leak]Leaked 914Organizations 1Disclosed 2026-01-08Updated 2026-10-23Osaka[Contained][Severity: Major]
Smaregi: store customer data leaked from an app linked to its POS[Misconfiguration][Data leak]Leaked 136.3KOrganizations 8