GMO Internet Faces US$50 Million Ransom Demand After Forex Trading Breach
Abstract:Hackers demand US$50 million from GMO Internet after breaching forex trading and Onamae.com servers, as Japan's finance minister says five forex firms reported affected customers.

Hackers are demanding US$50 million from GMO Internet Group and claim they have published customer information after the Japanese company did not pay, according to TokenPost. The incident has disrupted GMO's foreign exchange trading service and breached servers at its Onamae.com domain and cloud platform, putting cybersecurity and client-asset protection in focus for retail FX traders.
Forex service suspended since 21 October
GMO suspended its foreign exchange trading service on 21 October and has stopped accepting new subscriptions, TokenPost reported. The suspension remains in place, leaving customers unable to trade through the platform. The attack also breached every server operated by Onamae.com, GMO's domain and cloud services platform, potentially affecting the service's full user base.
Some customers had previously reported trades they did not authorise. Japan's finance minister, Katayama Satsuki, said five foreign exchange companies had reported affected customers, with no new reports of unauthorised trades as of Tuesday. The reported effects span two customer-facing areas: forex trading access and the Onamae.com service environment.
Ransom demand and data exposure claim
The hackers say they published customer information because GMO Internet Group did not pay the US$50 million ransom demand. The claim adds a potential data exposure dimension to the service disruptions at the Japanese company. GMO has requested government help to block the source of the attack and called for proactive cyberdefence measures.
The breach at Onamae.com, which provides domain and cloud services, could affect users beyond GMO's forex customers. The platform's full user base may be impacted, according to TokenPost. The incident highlights the interconnected risks facing online brokers that also operate other internet services.
Shares fall and regulatory attention
GMO shares recorded their steepest fall since 2011 on Monday amid concern about worsening cyberattacks, TokenPost reported. The finance minister's comments indicate that regulators are monitoring the situation, with five forex companies having reported affected customers. No new unauthorised trades had been reported as of Tuesday.
For retail forex traders, the event underscores the importance of broker cybersecurity and the potential for service disruptions. GMO's suspension of its forex trading service means clients cannot access their accounts for trading, and the data exposure claim raises concerns about personal information. Traders are advised to monitor official announcements from their brokers and regulators.
Finally, WikiFX would like to remind everyone that before using any US stock, futures, or forex brokers, remember to check the platform's regulatory information, trading environment, field inspection reports, user reviews, and overall rating on the WikiFX App. This will help you effectively avoid problematic scam platforms and rogue brokers, safeguarding your capital.

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