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Murata Manufacturing reports unauthorized access and potential leak of partner data
Friday, March 6, 2026 at 08:40 AM
Murata Manufacturing reported a security breach involving unauthorized access to its network. The company stated that external partner information may have been compromised during the cyberattack.
Context
Murata Manufacturing, a global leader in ceramic passive components and modules, confirmed that its IT environment was subject to unauthorized access discovered on February 28, 2025. This incident involved illegal access to file servers through an overseas subsidiary, potentially compromising data related to business partners and internal operations. While the company stated there is no definitive evidence of external leakage, it has restricted outside access and blocked intrusion routes as a preventive measure.
This security breach follows a history of similar vulnerabilities for the supplier, including a 2023 network intrusion and a 2021 incident where a subcontractor improperly uploaded over 72,000 files—including bank details for 30,000 business partners—to an external cloud. As a critical node in the global electronics supply chain, Murata's data integrity is vital for maintaining confidential design and procurement schedules for major smartphone and automotive manufacturers.
Sources (4)
Notice Regarding Unauthorized Access to Our IT EnvironmentCorporate introduction - Video Library - Murata Manufacturing Co., Ltd.Fully Restoring Production Capacity Four Months After an Earthquake - The Comprehensive Strength of Murata Which Supported the Recovery | Murata Manufacturing ArticlesJapanese manufacturer Murata apologizes for data breach | ZDNET
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