Japan's Largest Taxi Operator Halts Services Following Cyberattack

TOKYO — Nihon Kotsu, Japan's largest taxi operator, suspended critical portions of its digital infrastructure on Sunday after confirming a cyberattack compromised its internal systems. The disruption began late in the evening local time as unauthorized external access was detected within the company's network.

The attack forced the Tokyo-based conglomerate to shut down specific operational servers and booking platforms to contain the breach. Nihon Kotsu stated that malware infection is the primary vector for the intrusion, allowing attackers to gain control over sensitive data channels before security teams isolated affected segments of the grid. The company has temporarily halted dispatch services in several metropolitan districts while engineers work to restore secure operations.

Nihon Kotsu operates a vast fleet across Japan and manages millions of rides annually through its digital ecosystem. The outage affects passengers relying on smartphone applications for hailing cabs, as well as corporate clients using the firm's dedicated transport contracts. While physical taxi fleets remain available in some areas, the loss of centralized dispatching has created significant bottlenecks during peak evening hours.

Company officials confirmed that no passenger data or financial records have been publicly released by the attackers to date, though a full forensic audit is underway to determine the extent of potential information theft. The Japanese government's Cybersecurity Agency was notified immediately and is assisting with the investigation into the origin of the malware strain used in the assault.

The incident marks one of the most significant disruptions to Japan's transportation sector in recent years. Nihon Kotsu has urged customers to use alternative transport methods until further notice, noting that service restoration timelines remain uncertain as technicians scrub infected nodes from the network. The company emphasized its commitment to passenger safety and data protection while acknowledging the severity of the breach.

Authorities have not yet identified a specific group responsible for the attack or stated whether ransom demands were made. It remains unclear if the malware is part of a broader campaign targeting Japanese logistics firms or an isolated incident aimed specifically at Nihon Kotsu's market dominance. As night fell on Tokyo, long lines formed outside taxi stands where drivers operated manually without digital support.

Nihon Kotsu plans to issue further updates as more details emerge from the ongoing investigation. The company has activated its emergency response protocols and is coordinating with law enforcement agencies to trace the source of the intrusion. Until systems are fully secured, partial service interruptions will likely persist across major urban centers.