Reported breach

JR West Japan data breach

Country being checked · JR西日本

日本経済新聞 reported a data breach at JR West Japan on 31 October 2026. It affected 2 records.

People affected: 2records
Reported: 31 October 2026News report

Who is affected: Japan

What was exposed

Nobody has said yet what was exposed.

How it happened

How: Hacking Unauthorized access was received source
Our translation from Japanese
不正アクセスを受けた
Through: NTTデータ There was unauthorized access at a subcontractor of NTT Data that provides services for raising corporate bonds source
Our translation from Japanese
社債を募集するためのサービスを提供するNTTデータの委託先で不正アクセスがあった
Way in: NTTデータ There was unauthorized access at a subcontractor of NTT Data that provides services for raising corporate bonds source
Our translation from Japanese
社債を募集するためのサービスを提供するNTTデータの委託先で不正アクセスがあった

Sources 1

News report日本経済新聞JR西日本、投資家情報2件漏洩か氏名や住所など31 October 2026 · 2 records

News reports are read by an AI model; every fact taken from an article was checked word for word against it, and anything it could not find was dropped. · Corrections and changes

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