Yamaha: its US sales subsidiary was hit by a ransomware attack and information on local business partners may have leaked

1. 2023-06-15

   In Japan time it confirmed that the internal network of its US sales subsidiary had been accessed by a third party and that information had leaked. It quickly disconnected the affected devices from the network. [1] [2]

2. 2023-06-16

   It announced the case and identified a ransomware attack as the cause. [1] [2]

3. 2023-07-20

   It published a second report. The investigation of its US subsidiary ended and confirmed that no personal data of customers, business partners or employees leaked. A check of all group sites found that its Canadian sales subsidiary, Yamaha Canada Music, had also been accessed without authorization at about the same time, and personal data of local employees, directly run music schools and business partners was stolen. The other 15 domestic and 40 overseas sites were not affected. [3] [4]

Information about local business partners and others may have leaked, and details are under investigation. The subsidiary is operating normally and there is no effect on systems in Japan. The effect on results is being examined. [1] [2]