Yamaha Motor Co.

Summary

Between October 5 and 6, 2026, attackers gained unauthorized access to servers managed by Yamaha contractor Commune, potentially viewing or obtaining data from about 1,600 YAMAHA PAS Life members. Yamaha said no unauthorized access to its own systems or misuse of the exposed information had been confirmed.

Motives

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TTPs

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Description

Between October 5 and 6, 2026, unauthorized parties accessed servers managed by Commune Co., Ltd., a Tokyo-based contractor that provided the infrastructure system for the “YAMAHA PAS Life” community website. The PAS Life site was operated by Yamaha Motor Co. and served the company’s electric-assist bicycle community. According to Yamaha, customer information registered on the site may have been viewed and obtained as a result of the unauthorized access. The incident affected systems operated by the contractor rather than Yamaha’s own internal systems, and Yamaha said no unauthorized access to its own systems had been confirmed.

The potentially affected population included approximately 1,600 PAS Life website members. The information that may have been exposed consisted of members’ names, dates of birth, addresses, gender, and self-introductions posted on the PAS Life website. Credit card details were not included in the potentially exposed data. The available information did not establish that every affected member’s information was taken, but Yamaha described the data as potentially having been viewed and obtained during the intrusion.

Yamaha received a report from Commune concerning the incident and then determined the details that were available at the time. On October 12, the company publicly announced that customer information registered on PAS Life may have been exposed through unauthorized access to servers managed by the contractor. The disclosure identified the affected categories of personal information, the approximate number of people potentially involved, and the fact that credit card data was not among the potentially exposed information.

In its public statement, Yamaha said it had not confirmed any unauthorized access to its own systems. The company also stated that no misuse of the potentially leaked information had been confirmed as of the announcement. Yamaha apologized to customers and other concerned parties for the concern and inconvenience caused by the incident.

Sources

Sources available to members: 1 source.