JR Kyushu says up to 1.3 million member email addresses may have leaked

JR Kyushu says a cyberattack at its cloud provider may have exposed email addresses for up to 1.3 million members.

Email log data may also have been accessed.

The company says names, addresses, phone numbers, card numbers and newsletter content were not exposed.

The incident has also disrupted some email services, and the company cannot send its newsletters.