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[Investigating][Severity: Critical][Intrusion]

SBC: up to about 14,000 app member records may leak, including encrypted passwords

An SBC App server breach may expose up to about 14,000 member records, including encrypted passwords. Separate TV/radio broadcast systems are unaffected.

Disclosed

2026-11-06

Organizations involved

1

Leaked or at risk

14K

14,000

Downtime

Unknown

Impact and response

On 4 November SBC found that unauthorized external access to the app server may have exposed up to about 14,000 point-service member records. Fields are names, birth dates, gender, addresses, phones, emails and encrypted login passwords. Card data is excluded and no misuse has been confirmed. [1]

SBC blocked malicious traffic, stopped the affected processes, isolated the server and preserved evidence. External specialists are assisting investigation and safe rebuilding. TV/radio broadcast systems are on a separate network and broadcast operations are unaffected. [1]

Timeline

  1. Detected 2026-11-04
  2. Disclosed 2026-11-06
  3. 2 days

Services hit

Organizations involved

Sources

  1. [1][Official]SBCアプリ 不正アクセスによる個人情報流出の可能性について(第一報)Shin-etsu Broadcasting · 2026-11-06