A production API in Toyota's C360 customer relationship management (CRM) tool loaded with the personal information of an unknown number of the carmaker's customers in Mexico was found to expose reams of sensitive data.
A disclosure from threat hunter Eaton Zveare outlines how it was possible to access Toyota customers' names, addresses, phone numbers, emails, and tax identification numbers, as well as vehicle ownership and service history stored in the C360 CRM.
After reporting the issue to Toyota, Zveare said the sites were taken offline, and the APIs were secured so that they now require an authentication token.
"I would like to stress that I do not know how many customers are in this CRM," Zveare wrote. "There wasn't a user list — it was only possible to search for customers by name, ID, phone number, or email address."