Privacy Unpacked
Menu

Confirmed breach

GMO Trust Login (GMO Global Sign) data breach

JPJapan · GMOトラスト・ログイン（GMOグローバルサイン）

note reported a data breach at GMO Trust Login (GMO Global Sign) (Japan) on 1 November 2026, and it has been confirmed. It affected 45,030 people.

People affected
45,030people
Reported
1 November 2026News report

What was exposed 5

  • Email addresses
  • Names
  • Linked service names
  • Department/organization
  • Employee numbers

How it happened

How
Data left open (misconfiguration) 設定ミスにより、2017年11月から2026年9月15日まで約9年間、外部から閲覧・取得できる状態だった source

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

More breaches in Japan

  1. GMO Global SignreportedJPJapan · 1 November 2026 Email addressesNames 45Kpeople
  2. GMO subsidiaryreportedJPJapan · 1 November 2026 ID management service data 45Kpeople
  3. BK JapanreportedJPJapan · 1 November 2026 Email addressesPhone numbersDates of birth+3 11.2Maccounts
  4. Club TourismreportedJPJapan · 31 October 2026 Email addressesPhone numbersDates of birth+5 4.3Mrecords
  5. NTT DatareportedJPJapan · 31 October 2026 Dates of birthNamesPurchase amounts 362records

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.