Japanese GMO Hit by Ransomware Attack, Customer Data Possibly Leaked

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The Japanese crypto firm GMO Internet Group faced a ransomware attack, with hackers demanding $50 million in ransom after allegedly leaking customer data. The company has not yet confirmed the breach but suspended its foreign exchange trading service on October 21. The Onamae.com servers were fully compromised, potentially affecting all users. Some customers reported unauthorized transactions. Finance Minister Uchida noted five affected FX companies, with no new cases reported. GMO is seeking government assistance to trace the origin of the attack. Meanwhile, inflation data remains a key concern for traders amid ongoing market volatility. New token listings on major platforms have also drawn attention as investors seek alternative assets.

ChainThink reports that on October 27, according to Bloomberg, after GMO Internet Group suffered a cyberattack, the hackers claimed they leaked customer information due to not receiving a $50 million ransom.

GMO has not confirmed whether the subsequent ransomware attack claimed by the hacker occurred. GMO's foreign exchange trading service has been suspended since October 21 and no longer accepts new subscriptions;

All servers under the domain and cloud services Onamae.com have been compromised, potentially affecting all users. Previously, some customers reported transactions initiated without their authorization.

Japan's Finance Minister, Takayuki Katayama, stated that five foreign exchange companies have reported that their customers were affected by the incident, and no new reports of unauthorized transactions have been received so far. GMO has requested government assistance to block the source of the attack;

Concerns over a cyberattack caused the company's stock to record its largest drop since 2011 on Monday.

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