Japanese internet giant GMO warns of customer data breach

Summarised from 2 outlets · 3 reports · Updated 27 Oct, 13:44 · Archive

GMO Internet Group has told customers to secure their data after hackers threatened to expose stolen information from a cloud service breach.

Japanese internet company GMO Internet is investigating a data breach affecting its Onamae cloud desktop service, which provides virtualised desktops to financial traders. The company announced that suspected hackers have threatened to disclose stolen customer information and may have already published data. GMO told account holders to back up their data and unplug their computers as a precaution.

The company said 27,000 servers may be affected by the breach. GMO is verifying the contents of allegedly posted data, and the full extent of the incident remains unclear. The firm has advised customers to reset their passwords following reports of unauthorised operations performed on customer trading accounts.

TechCrunch reports that the incident comes about a week after GMO's cybersecurity unit reported finding evidence that a Chinese AI-enabled penetration testing tool called Artex had been used in hacks targeting companies across Japan. However, the company said it has not publicly established a connection between Artex and the Onamae breach. The attacks largely relied on exploiting weak security controls, such as a lack of multi-factor authentication.

Japanese internet giant GMO warns of customer data breach — Image: The Japan Times

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How it is being reported

Japan internet giant GMO says hackers posted stolen customer dataJapan's GMO Internet is verifying alleged customer data posted by suspected hackers following a cloud service breach.TechCrunch · 27 Oct, 13:32
GMO tells account holders to prepare for worst as hackers threaten exposureGMO Internet Group asked account holders to back up data and unplug their computers as a hacking group threatened to disclose stolen information.The Japan Times · 27 Oct, 04:56
GMO tells account holders to prepare for the worst as hackers threaten exposureGMO Internet Group asked account holders to back up their data, turn off their computer and pull the plug connected to the computer before noon.The Japan Times · 27 Oct, 02:41

In this story: GMO Internet Group · Onamae · Japan · Artex · CrowdStrike

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