Kadokawa Corporation Data Breach
On June 8, 2024, Japanese media and publishing group Kadokawa Corporation (kadokawa.co.jp) and its subsidiary Dwango (operator of Niconico) suffered a ransomware attack targeting their data center infrastructure.
Exposed Data Types
6- Names
- Dates of birth
- Physical addresses
- Phone numbers
- Email addresses
- Education levels
About This Breach
According to the company's official investigation results published on August 5, 2024, personal data belonging to 254,241 individuals (including Niconico creators, employees, business partners, and students of the Kadokawa Dwango Educational Institute) was exposed, comprising full names, dates of birth, physical addresses, phone numbers, email addresses, and educational records.
Verification and editorial method
LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.
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