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Hacking & intrusion

GMO forex service hack causes unauthorised trades and customer losses

First reported · Last reported · 36 related reports

Unauthorised access to GMO's foreign exchange trading service led to a data leak and unauthorised trades. As at 13 November, users had reported losses totalling ¥2.99 billion across 2,943 accounts, while costs including compensation for customer losses and goodwill payments came to ¥3.05 billion. GMO carried out a group-wide review. It also emerged that vulnerabilities had been highlighted and a system redesign proposed two years earlier, but no action had been taken.

Key facts

Affected organisation
GMO Internet Group
Incident type
Hacking & intrusion
Occurred / detected
Not confirmed
Scale of damage
Reported losses across 2,943 accounts totalling ¥2.99 billion; related costs, including compensation, of ¥3.05 billion
Cause / method
Unauthorised access to the foreign exchange trading service
Location
Japan

Timeline

  1. A hack of a Japanese trading platform and a demand for $50 million were reported.
  2. GMO users' reported losses totalled ¥2.99 billion across 2,943 accounts.
  3. GMO recognised total costs of ¥3.05 billion for compensation for customer losses, goodwill payments and other expenses, and carried out a group-wide review.
  4. It emerged that vulnerabilities had been highlighted and a system redesign proposed two years earlier, but no action had been taken.

36 related reports

The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.