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Japan companies compensate users as cyberattacks buffet economy

GMO Internet and Park24 are offering payments after attacks disrupted services and exposed customer data, with authorities and police involved.

  • Japanese firms GMO Internet Group and Park24 announced compensation for customers following recent cyberattacks, offering 5,000 yen and 3,000 yen respectively as "an initial gesture of good faith."
  • Critical vulnerabilities in the PHP programming language prompted millions of hacking attempts last week, causing government and company websites across Japan and Europe to go offline.
  • GMO Internet refused to pay a ransom demand from attackers and will coordinate with police authorities instead, while providing free alternative services for six months and expecting a 5.5 billion yen extraordinary loss.
  • Japan announced Friday it will establish a team to simulate cyberattacks using artificial intelligence to identify system weaknesses, while GMO requested the government apply new cyberdefence measures.
  • Cybersecurity incidents reached 723 by October 20, exceeding annual totals from 2025 and 2024, as Moody Ratings reports that well-resourced companies must invest in stronger defenses to offset rising risks.
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On the Tokyo Stock Exchange on the 26th, shares of GMO Internet Group fell by more than 12% at one point compared to the previous weekend. Selling pressure spread due to concerns about compensation costs for customers and the impact on earnings following an unauthorized access issue involving services provided by its subsidiary companies.

·Japan
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Kazlaser shares his opinion on the cyberattack on GMO Internet. What is the unreasonable "structure" that has emerged...? Photo: sirabee editorial department Kazlaser of the comedy duo Maple Chogokin appeared on the program "DayDay." (Nippon Television Network) on the 26th.

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BizToc broke the news on Monday, October 26, 2026.
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