> JapanHacked_
[Investigating][Severity: Critical][Insider][Misconfiguration]

SoftBank: customer data mishandled at contractor UF Japan

The notice described suspected USB copying by a former subcontractor employee and inappropriate cloud sharing by another employee. It identified 137,156 customer records plus 161,132 identifier-only entries. The work was stopped on May 20 and the contract terminated on June 9.

Disclosed

2025-06-11

Organizations involved

1

Leaked or at risk

161.1K

161,132

Downtime

Unknown

Timeline

  1. Disclosed 2025-06-11
  2. 1 days

Attack or cause

Method
[Insider][Misconfiguration]
Impact
[Data leak]
Entry point
Supplier

Data exposed or at risk

[Name][Postal address][Date of birth][Phone number][Gender]

Supply chain

[Breached]

Organizations listed on this site
1

Organizations involved

Open in organization search

Sources

  1. [1][Official]業務委託先企業による個人情報漏えいの可能性についてSoftBank Corp. · 2025-06-11