Cyber Threat Pulse

GMO Internet warns of threatened data leak and ransomware attack

GMO Internet warns of threatened data leak and ransomware attack

GMO says its Onamae service was breached, with customer data accessed and unauthorized forex trades reported; it warns of a threatened data leak and ransomware attack by noon October 27. The reported $50 million ransom refusal, attacker claims, and scope remain unverified; watch for confirmation of data publication, encryption, and customer-account impact.

Sources (2)
Updated Oct 27, 2026