World Wires · story 2462 · corroborated · 2 source(s)

Japan's Keio confirms ransomware attack disrupted business systems

Japanese railway operator Keio Corporation confirmed that a ransomware attack disrupted several of its internal business systems over the weekend.

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Coverage

• Keio Corporation confirms ransomware incident Mastodon #ransomware · tier D · clear net · 2026-09-29 04:20 UTC
• Keio Corporation confirms ransomware attack affecting retail and hotels Mastodon #ransomware · tier D · clear net · 2026-09-29 01:14 UTC
• Japan's Keio confirms ransomware attack disrupted business systems BleepingComputer · tier C · clear net · 2026-09-28 20:56 UTC
• Keio Group Suffers Ransomware Attack Impacting Retail and Hotels Mastodon #ransomware · tier D · clear net · 2026-09-28 10:01 UTC

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