Ransomware attack disrupts Keio business systems in Japan

Keio Corporation, a major Japanese railway and hospitality operator, confirmed it suffered a ransomware attack over the weekend that disrupted some business systems, mainly affecting its hotel operations. Train services remain unaffected. The company shut down its network to limit damage and is investigating if customer or partner information was accessed. Local media reports added that payment systems were hit. No criminal group has claimed responsibility yet.

• Keio shut down systems after a ransomware attack
• Only hospitality business disrupted, trains unaffected
• Payment systems reportedly impacted
• Investigation underway into data compromise
• No group has claimed responsibility yet