GMO internet group, Inc.

9449.T
Telecom Services
2026/10/23 10:54 Updated
Market Cap: $2.1B (¥335.9B)
Stock Price: $23.04 (¥3,611)
Exchange Rate: 1 USD = ¥156.74

Notice Regarding Unauthorized Access to Services of a Consolidated Subsidiary

Unauthorized access by a third party was confirmed on the consolidated subsidiary's Onamae.com Desktop Cloud service. Up to 26,739 servers may be affected; login credentials for trading accounts and similar information may have been obtained. Payment information is not stored on the service. Reopening timing is TBD, and the impact on financial results is undetermined. Consultation with the police and ongoing investigation are being conducted.

Importance:
Page Updated: October 23, 2026
IR Disclosure Date: October 23, 2026

Key Figures

  • Servers potentially affected: 26,739 cases (potential case count at time of announcement; unauthorized access not confirmed for all)
  • Affected service: Onamae.com Desktop Cloud (all plans)
  • Payment information: Payment information including credit card details is not stored

AI要約

Overview and Incident

Unauthorized access by a third party was confirmed on Onamae.com Desktop Cloud provided by a consolidated subsidiary of GMO internet group, Inc. Login information for trading accounts and other data stored on servers may have been obtained and misused by a third party. The situation is under investigation; as of October 23 at 16:00, servers across all plans remain suspended. Payment information is not retained on the service's servers.

Response and Next Steps

The company continues to suspend servers for all plans, is conducting an investigation with a security specialist firm, and has consulted with the police. Customers have been advised to change authentication information, terminate login sessions, and enable two-factor authentication. New facts will be disclosed as they emerge. The impact on consolidated financial results is currently undetermined.

This page uses AI to summarize IR materials from TDnet. Please refer to the original document for investment decisions.

GMO internet group, Inc.

Company overview · Stock price · Financial data · All IR

View company page →