Yamaha Data Breach Exposes 1,600 Users' Personal Information

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Yamaha Data Breach Exposes 1,600 Users' Personal Information

First seen 15 Oct 2026, 16:36 UTC • •39.0

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ThreatCluster •October 15, 2026 at 17:37 UTC

•Yamaha confirmed a data breach affecting 1,600 users of its community website.
•The breach involved unauthorized access to a contractor's server, not Yamaha's own systems.
•No financial information was compromised, and there is no evidence of data misuse.

Yamaha Motor Co. reported a cyberattack on a contractor's server, potentially exposing personal data of 1,600 members from its electric-assist bicycle community website. The breach occurred due to unauthorized access to servers managed by Commune Inc., which operates the Yamaha PAS Life website. The leaked information includes names, dates of birth, addresses, gender, and self-introductions, but does not involve credit card details. Yamaha confirmed there has been no evidence of misuse of the data. The attack happened between October 5 and 6, 2026, and Yamaha made the announcement on October 12, 2026. The incident is part of a trend of data breaches affecting Japanese companies in recent weeks.

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Timeline

2026-10-05

Unauthorized access occurred

Hackers gained unauthorized access to servers managed by Commune Inc. affecting Yamaha's PAS Life website.

2026-10-06

Unauthorized access ended

The unauthorized access to the server was reported to have occurred on this date.

2026-10-12

Yamaha announces data breach

Yamaha Motor Co. publicly disclosed the breach and the potential exposure of user data.

More articles in this cluster (3)

Threat Graph

2 entities, 1 inferred relationships (STIX 2.1).

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Technique (1)

Data Breach

Weakness (1)

CWE-200 - Exposure of Sensitive Information

Relationships

Data Breach related to CWE-200 - Exposure of Sensitive Information

Common questions

What type of data was exposed?

The exposed data includes names, dates of birth, addresses, gender, and self-introductions.

Is there any evidence of data misuse?

Yamaha has confirmed there is no evidence of misuse of the potentially leaked information.

What actions should affected users take?

Affected users should monitor their accounts for suspicious activity and consider changing passwords.

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