Maru-Jan mahjong breach leaks 1,855,578 email addresses and passwords
SignalTalk said the intrusion route was identified and the service resumed on November 7, 2026, after emergency maintenance. No card numbers were exposed.
SignalTalk announced that unauthorized access to its online mahjong service Maru-Jan leaked the email addresses and passwords of 1,855,578 members, according to 4gamer.net.
The company said credit card numbers were not included in the leak because it does not hold them.
SignalTalk identified the intrusion route and applied countermeasures to the exploited point during emergency maintenance. The service resumed at 16:00 on November 7, 2026.
The operator apologized to users and asked them to change their passwords and to watch for suspicious emails.
Quick answers
How many Maru-Jan members were affected by the breach?
SignalTalk said the email addresses and passwords of 1,855,578 members were leaked.
Were credit card numbers leaked?
No. SignalTalk said card numbers were not included because the company does not hold them.
When did Maru-Jan come back online?
The service resumed at 16:00 on November 7, 2026, after emergency maintenance.