On March 29, 2019, Toyota Motor Company (TMC) announced in Japan that that its Tokyo Sales Holdings Inc., a TMC sales subsidiary, and its affiliated enterprises, as well as 3 other dealers in Japan, have been hacked. Unauthorized access had been detected on March 21, 2019 on a server containing data belonging to 3.1 million customers. Customer names and dates of birth were hacked, but no credit card information.
On February 21, 2019, Toyota Australia reported a security breach. Although no user or customer data was hacked at that time, the attack caused disruptions to its IT systems.
Read more about it here.