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GMO Internet Group

Controversies

Controversies tied to this brand in public sources. A listing is not a finding of fault.

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  1. 2026

    GMO Internet Investigates Onamae Cloud Service Data Breach

    Issue disclosure

    GMO Internet stated that it was verifying customer data allegedly posted by suspected hackers following unauthorized access to its Onamae cloud desktop service. The company said that 27,000 servers may be affected and advised customers to reset their passwords. The full extent of the incident remained unclear.

    GMO Internet said it was verifying customer data allegedly posted by suspected hackers after unauthorized access to its Onamae cloud desktop service. The company said 27,000 servers may be affected and advised customers to reset their passwords; the full extent of the incident remained unclear.

    Company response

    • Investigation — GMO Internet

      Japan's GMO Internet is verifying alleged customer data posted by suspected hackers following a cloud service breach.

    • Remediation — GMO Internet

      GMO Internet has since advised customers to reset their passwords

    • Apology — GMO Internet Group

      Japanese internet service provider GMO Internet Group on Monday apologized after the company's automated foreign exchange margin trading system was accessed without authorization.

    • Personnel action — GMO Internet Group

      Group chair's monthly compensation to be reduced by 30% for three months

    Source excerpt

    • October 21: GMO Internet shut down its Onamae Desktop Cloud service after discovering unauthorized access had occurred to its systems without permission.
    • GMO Internet has since advised customers to reset their passwords
    • Japanese internet service provider GMO Internet Group on Monday apologized after the company's automated foreign exchange margin trading system was accessed without authorization.
    Source