GMO Founder Says Own Security Unit Flagged Flaws Before FX Server Hack

What happened

GMO Internet Group founder Masatoshi Kumagai said its security unit flagged a vulnerability in the Onamae.com Desktop Cloud trading server service in April 2024, but the warning did not reach management. Hackers later breached the service, which remains offline; brokers said stolen logins were used to trade on client accounts.

Confirmed

Global impact / market context

The episode links a missed internal warning and maintenance that failed to fix the underlying flaw to a breach affecting servers used to run MetaTrader. Keeping the service offline may disrupt its business, while any response to the incident could add costs; the article gives no financial estimate.

Analyst inference

The article identifies GMO Internet Group as the company involved but provides no share-price move, financial impact, or estimate of customer losses. It does report that four executives’ pay was cut and that Kumagai gave up 30% of monthly compensation for three months.

Confirmed

What to watch

1. Whether GMO changes how security findings reach management, as Kumagai said the group is discussing changes to internal information sharing after the warning was not escalated. Confirmed
2. Whether the Onamae.com Desktop Cloud service returns online, and what steps GMO reports taking to address the flaw that remained after four rounds of emergency maintenance. Analyst inference
3. Whether GMO discloses further details about affected customers or costs, since the article says up to 26,739 servers may have been exposed but provides no financial estimate. Analyst inference

Evidence

• financemagnates.com