GMO Internet security incident history
Hacking, data breaches and other security incidents involving GMO Internet, with related coverage.
GMO Internet cloud breach leaks customer data and causes trading losses
Impact: Up to 26,739 servers affected; loss compensation claims totalling 2.99 billion yen for 2,943 accounts
GMO Internet's Onamae.com Desktop Cloud suffered a malware attack that affected up to 26,739 servers, resulting in customer data leaks and asset losses from unauthorised trades. The company advised customers to shut down their PCs and offered a bounty to track down the attackers, while acknowledging that it had not adequately responded to earlier warnings about security vulnerabilities. By 12 November, claims for loss compensation totalling 2.99 billion yen had been submitted for 2,943 accounts, while the final loss amount remained undetermined.
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