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211 results
Disclosed 2025-12-26Updated 2026-10-23Tokyo[Contained][Severity: Critical]
Keio University: intrusion into the SFC email system[Intrusion][Data leak]Leaked 222.5KOrganizations 1Disclosed 2025-12-25Updated 2026-10-23Tokyo[Investigating][Severity: Major]
Alcare: work phone account taken over[Phishing][Credential abuse][Data leak]Leaked 400Organizations 1Disclosed 2025-12-23Updated 2026-10-23Tokyo[Contained][Severity: Critical]
FUJIFILM Medical: sales system intrusion[Credential abuse][Data leak]Leaked 590KOrganizations 1Disclosed 2025-12-12Updated 2026-10-23Tokyo[Resolved][Severity: Moderate]
Tokyo Hanyaku: website defaced[Intrusion][Site defacement][Service outage]Organizations 1Disclosed 2025-11-28Updated 2026-10-23Tokyo[Contained][Severity: Critical]
Mitsubishi Paper Mills: intrusion through remote access[Intrusion][Data leak]Leaked 2.4KOrganizations 1Disclosed 2025-11-27Updated 2026-10-23Tokyo[Contained][Severity: Major]
Shin Nihon Kentei Kyokai: ransomware attack[Ransomware][Data leak][Service outage]Leaked 30KOrganizations 5Disclosed 2025-11-13Updated 2026-10-23Tokyo[Contained][Severity: Critical]
Tokai Software Development: ransomware leaks Tokai University data[Ransomware][Credential abuse][Data leak][Service outage]Leaked 193.1KOrganizations 2Disclosed 2025-11-11Updated 2026-10-23Tokyo[Contained][Severity: Major]
Gakken Medical Support: account permission error[Misconfiguration][Data leak]Leaked 600Organizations 1Disclosed 2025-11-11Updated 2026-10-23Tokyo[Contained][Severity: Moderate]
National Diet Library: development environment intrusion; suspected leak ruled out[Intrusion]Leaked 40.4KOrganizations 2Disclosed 2025-11-06Updated 2026-10-23Tokyo[Contained][Severity: Critical]
Kobayashi: server data stolen[Intrusion][Data leak]Leaked 8.1KOrganizations 1Disclosed 2025-11-04Updated 2026-10-23Tokyo[Contained][Severity: Major]
Nikkei: unauthorized access to its Slack[Malware][Credential abuse][Data leak]Leaked 17.4KOrganizations 1