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[Investigating][Severity: Major][Intrusion]

TBS Glowdia: break-in at a contractor's mail delivery system leaked email addresses of up to about 50,000 TBS Shopping members

A break-in at the mail delivery system used by a contractor of the TBS Shopping online store leaked email addresses of up to 49,995 members.

Disclosed

2026-10-28 18:47

Organizations involved

1

Leaked or at risk

50K

49,995

Downtime

Unknown

What happened

  1. A break-in at the mail delivery system used by a contractor was confirmed to have leaked member data. [3]

  2. The leak became public through news reports. [1] [2]

Impact

Of about 1,100,000 members, email addresses of up to 49,995 people in total leaked. Names, addresses, phone numbers and card data were not included, and no misuse had been found at the time of disclosure. [1] [3] [4]

Timeline

  1. Detected 2026-10-16
  2. Disclosed 2026-10-28
  3. 12 days

Attack or cause

Method
[Intrusion]
Impact
[Data leak]
Entry point
Supplier

Data exposed or at risk

[E-mail address]

Supply chain

[Breached]

Organizations listed on this site
1

Services hit

Organizations involved

  • [Through a supplier][Major]Tokyo, MinatoInformation and communications49,995 leaked

    TBS Glowdia, Inc.

    Runs the TBS Shopping online store; the mail delivery system used by one of its contractors was broken into. It has not named the contractor.

Open in organization search

Sources

  1. [1][News]TBS、ECサイトの会員情報5万件流出　委託先に不正アクセスNikkei · 2026-10-28 18:47
  2. [2][News]TBSショッピング 約5万件の会員情報が流出　業務委託先のメール配信システムに不正アクセスTBS NEWS DIG · 2026-10-28 19:06
  3. [3][News]通販サイト「TBSショッピング」　メアド最大のべ約5万人分漏洩The Asahi Shimbun · 2026-10-28 21:15
  4. [4][News]JAL 9万2000人の個人情報流出 ANAも不正アクセス報告　「TBSショッピング」に不正アクセス 最大5万人分の情報流出FNN Prime Online · 2026-10-28 23:39