SHINDO2

Advantest Corporation

RansomwareSize not disclosed

LEAK UNCLEARInvestigating

Open in the live monitor ▶
Disclosed
Feb 19, 2026
Leak
Unknown
Type
Ransomware
Status
Investigating
Security spend
Not checked yet
Compensation
Not announced

What leaked

UnspecifiedData that may have been accessed or taken (being identified)

Who is affected

  • Affected parties still being identified

Cause

Unauthorized access to some internal network systems and deployment of ransomware; entry route under investigation

Timeline

  1. Announced an incident involving ransomware
  2. Update

Response

  • Blocked the entry point
  • Forensic investigation
  • Service stopped

Isolated the affected systems and shut others down as a precaution. Investigating with Palo Alto Networks Unit 42 and working with the authorities

What you should do

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

Lessons for companies

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

Sources