Japanese railway operators Tokyo Metro and Keio hit by weekend cyber attacks

Tokyo Metro disclosed that an unauthorized third party accessed the email addresses of 59,000 Metpo loyalty members, while Keio suffered a ransomware attack on September 26 and disconnected systems from the internet. Sales systems at some group companies were disrupted, but train operations remain unaffected.

• Tokyo Metro: email addresses of 59,000 Metpo members accessed
• Keio: ransomware attack on September 26, police investigating possible data leak
• Keio cut systems from the internet; sales at some group firms disrupted
• Train operations at both operators remain unaffected