Nihon Kotsu security incident history
Hacking, data breaches and other security incidents involving Nihon Kotsu, with related coverage.
Nihon Kotsu system breach may have leaked personal data of about 290,000 people
290KImpact: Possible leak of personal data of about 290,000 people
In July 2026, a malware infection and a breach of internal systems at Nihon Kotsu disrupted its taxi dispatch and booking systems. The investigation found that personal data of about 290,000 people, including job applicants, employees, family members, accident counterparties and users of its hire car service, may have leaked, and that data of ordinary taxi users was not included. Depending on the group, the data may include driver's licenses, bank accounts, health check results and some My Number data, and as of Oct. 30 no further harm from misuse of the information had been confirmed.
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