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Reported breach

BK Japan data breach

JPJapan · ビーケー・ジャパン

Yahoo!ニュース reported a data breach at BK Japan (Japan) on 1 November 2026. It affected 11,180,000 accounts.

People affected
11,180,000accounts
Reported
1 November 2026News report

What was exposed 6

  • Email addresses
  • Phone numbers
  • Dates of birth
  • Names
  • Gender
  • Prefectures

How it happened

How
Hacking Leakage caused by unauthorized access source
Our translation from Japanese不正アクセスによって漏えい

Sources 1

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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  1. GMO Global SignreportedJPJapan · 1 November 2026 Email addressesNames 45Kpeople
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  3. Club TourismreportedJPJapan · 31 October 2026 Email addressesPhone numbersDates of birth+5 4.3Mrecords
  4. NTT DatareportedJPJapan · 31 October 2026 Dates of birthNamesPurchase amounts 362records
  5. All Nippon AirwaysreportedJPJapan · 30 October 2026 Passport numbersPhone numbersNames+5 37.8Kcustomers

Every breach in Japan →

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Found a mistake? Tell us and we correct it.