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GMO Internet ransomware attack

Story timeline · 2 updates, 28 Oct to 29 Oct 2026

GMO Group's cloud desktop service suffered unauthorised access affecting up to 26,739 servers, with hackers demanding a ransom in BTC and ETH. GMO refused to pay and plans to compensate customers; its June 2031 yen bond spread widened to about 174 basis points on 28 Oct from about 122 on 20 Oct.

Every update, oldest first

  1. GMO says it refused ransom demand in BTC and ETH after breach

    GMO Group's cloud desktop service suffered unauthorised access affecting up to 26,739 servers, with hackers demanding a ransom in BTC and ETH that fell from $50m to $1m. GMO's Masatoshi Kumagai said it paid nothing, and GMO Coin found no unusual client account activity.

    BitcoinOdailyAIBearish

  2. GMO Internet bond spread widens after ransomware attack, Bloomberg reports

    The spread on GMO Internet's yen bond maturing in June 2031 widened to about 174 basis points on 28 Oct from about 122 on 20 Oct, before it disclosed unauthorised access, Bloomberg reported. GMO refused an ¥8bn ($50.7m) ransom demand and plans to compensate customers.

    MacroOdailyAIBearish

Every update is a short rewrite, by AI in our own words, of a flash from the outlet named on it, credited and linked. Updates are joined into one story by AI; our editors can change a story’s name or take an update out. Not investment advice.