Japan · Story · Companies
GMO Internet Group faces cybersecurity breach
GMO Internet Group's servers were breached, exposing user data and prompting a request for government cyber defense measures.
No new coverage since 24 October 2026.
The story so far as of 24 October 2026
On 23 October, GMO Internet Group's servers for foreign exchange trading were breached, exposing user IDs and passwords. The company began investigating the incident and advised users to monitor their accounts. On 24 October, GMO requested the Japanese government to implement 'active cyber defense' measures due to unauthorized access to its automated trading server. The breach resulted in unrecognized transactions within its investor cloud service, prompting increased communication with users to mitigate further damage.
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Coverage, day by day
- Companies
GMO Internet Group requests active cyber defense
Impact Investors using GMO's services face increased cybersecurity risks and operational disruptions.
Sources: NHK ↗
- Disruption
GMO Internet Group hit by server breach
Impact Investors using GMO's FX trading services face security risks and potential unauthorized transactions.
Sources: NHK ↗
Sources in this story
- NHK 2
Sources: each headline links to the original article on the publisher's site.