GMO Internet Group announced that it would conduct a comprehensive review of its security systems across all group companies. Up to 950,000 items of personal data were leaked through unauthorised access at a subsidiary, and the unauthorised use of points was also confirmed.
On the 9th, GMO Internet Group Chairman and President Kumagai Masatoshi (熊谷正寿) disclosed on his X account that the group would conduct a comprehensive review of its security systems. Unauthorised access at a subsidiary research company had resulted in the discovery of a personal data leak on the 5th, and the review will be conducted as part of measures to prevent recurrence.
He also said that the company would conduct emergency inspections of all group services and retrain approximately 8,000 employees.
At GMO Research & AI, a subsidiary, the leak of up to 950,000 items of personal data was confirmed, along with the unauthorised use of points worth a total of ¥2.87 million that had been awarded for survey responses.
The article reports on GMO Internet Group’s future response and the planned disclosure of detailed measures to prevent recurrence.