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NTT Docomo shared 344,213 customers' phone numbers and plan data with Amazon Japan without consent
Sep 16, 2026NTT Docomo disclosed on September 16, 2026 that a configuration error introduced during a February 2026 system update to its online contract process caused the consent mechanism for sharing customer data with Amazon Japan to be omitted. As a result, telephone numbers and pricing-plan names for 344,213 mobile lines were shared with Amazon Japan without customer consent between April 21 and August 20, 2026. Amazon Japan deleted the information after being notified.