Technology
GMO investigates possible data leak affecting up to 27,000 servers
GMO Internet is investigating unauthorized access to its Onamae cloud desktop service after suspected attackers posted data allegedly linked to customers and the company. GMO says as many as 27,000 servers may be affected, and customers have reported unauthorized trading-account activity. The company shut down the service, advised password resets, offered compensation and began collecting devices for analysis. The data’s authenticity and the breach’s full scope remain unverified, and GMO has not linked the incident to a separate AI-enabled hacking tool.
Editorial summary · Publisher article
What matters
- GMO received an approximately 8 billion yen ransom demand and reported the incident to police.
- The service supports virtual desktops used by financial traders.
- The attacks largely relied on weak security controls, including absent multifactor authentication, according to the supplied report.
Context & caveats
- The company is still verifying whether the posted information is genuine and has not established a connection to Artex.
Why this made the edition
Substantive breach reporting includes affected service, possible scale, customer-account concerns, ransom demand, response timeline and unresolved attribution.
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