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Japanese FX Platform Hit by Major Cyber Attack, Ransom Demanded

A significant security breach has compromised customer data across multiple foreign exchange trading firms operating on a Japanese platform. The incident has prompted a multi-million dollar ransom demand from attackers.

LSN Singapore · 27 October 2026

Japanese FX Platform Hit by Major Cyber Attack, Ransom Demanded

Customers of five foreign exchange trading firms have been affected by a security breach targeting GMO Internet Group's currency trading platform, marking a major incident in the region's financial technology sector.

The cyberattack has exposed customer information held by firms operating on the compromised platform. Authorities are investigating the extent of the breach and the nature of data accessed during the incident.

Attackers have demanded approximately US$50 million in ransom related to the breach. The demand underscores growing concerns about cybersecurity vulnerabilities in financial trading infrastructure across Asia.

GMO Internet Group operates one of the region's major foreign exchange platforms. The company is conducting a full security review and has begun notifying affected customers and regulatory authorities of the incident.

The breach serves as a reminder of persistent cybersecurity challenges facing fintech companies in South and Southeast Asia, where regulatory frameworks continue to evolve alongside technological advancement.