Update: As more details emerge, this story gets even bigger in some respects. See this news coverage at: https://www.gizchina.com/2023/05/13/toyota-mishandled-user-data-by-publishing-over-2-million-user-info-online/
Daniel Leussink and Kantaro Komiya report:
Toyota Motor Corp said on Friday the vehicle data of about 2.15 million users was left publicly available in Japan for about a decade from November 2013 to mid-April.
[…]
The leak, attributed to a setting error in the cloud environment, could encompass details such as vehicle locations and identification numbers of vehicle devices, but there were no reports of malicious use, the company said.
Read more at ThePrint