SHINDO2

Mynavi

Unauthorized accessSize not disclosed

POSSIBLE LEAKInvestigating

Open in the live monitor ▶
Disclosed
Feb 13, 2026
Leak
Leak possible
Type
Unauthorized access
Status
Investigating
Security spend
Not checked yet
Compensation
Not announced

What leaked

UnspecifiedPersonal data on users and business contacts

Not leaked

  • Not unauthorized access to the service sites or their databases

Who is affected

  • Users
  • Business partner contacts

Cause

An outside third party accessed a cloud service the company uses

Timeline

  1. Security NEXT report date

Response

  • Blocked the entry point
  • Forensic investigation

Blocked outside access, reported to the relevant authorities, investigating

What you should do

  1. Check the company's notice to see if you're affected

Lessons for companies

  1. Report to the PPC: preliminary in 3–5 days, final in 30 (60 if malicious)
  2. Run red teaming and AI-assisted hardening, and publish how much you invest

Sources