Japan's Largest Taxi Company Nihon Kotsu Hit by Cyberattack
Services temporarily suspended due to malware infection.
1Discovery of the Attack
Japan's largest taxi operator Nihon Kotsu detected a malware infection in its systems on the morning of July 11, 2026. Authorities shut down systems as an emergency measure to contain the damage.
2Service Disruptions
The shutdown of systems temporarily disabled the online car reservation system, phone-based taxi dispatch service, and some internal systems. This created a significant operational gap for customers.
3Customer Redirection
With the phone dispatch service down, customers were directed to use the GO taxi app to select Nihon Kotsu or find taxis on the street. This manual workaround helped maintain operations.
4Security Investigations
Nihon Kotsu is working with external security experts to determine the scope of the attack, identify its cause, and analyze logs. The internal network has been isolated to prevent further spread of malware.
5Data Leak Risk
The company is investigating whether personal data was leaked. No data breach has been confirmed yet, but affected customers will be notified individually if any leak is discovered.
6Secure Recovery Process
Nihon Kotsu is prioritizing the secure recovery of its systems and warning customers about suspicious emails. The company will continue to provide updates on the investigation and recovery process.