Threat actor shadowbyt3$ claimed a ransomware breach against TINYpulse (nintendo.com) in Japan, demanding affected organizations respond to leaked private employee chats and providing “file trees” as proof, with additional victims promised. The actor stated the leaked data included employee names and emails plus internal private message content, and warned of potential lawsuits and further disclosures. #Japan
Incident Details
- Victim: TINYpulse NINTENDO BREACH (nintendo.com)
- Sector: Technology
- Country: JP
- Actor: shadowbyt3$
- Source:
- Discovered: 2026-06-16T06:50:21.954593+00:00
- Published: 2026-06-16T06:50:16.135938+00:00
Information
- Private employee messages and internal conversations were exposed.
- Personal identity details were included, such as full names and email addresses.
- Financial and invoice-related records were also part of the leak.
- The breach appears to have affected an employee communications platform used in connection with the organization.
- Exfiltrated data was described as including both compressed and uncompressed archive sizes.
- Threat actors warned that additional victims may be announced.
- They claimed they would release stolen files if contact was not made through their leak site email.
- They said they could provide file-tree proof to verify the breach.
- The leaked messages suggested internal discussions about staffing shortages and the need for more content creators or writers.
- Another message reflected employee stress caused by overlapping high-priority projects and frequent meetings.
Disclaimer: This post is based on public claims made by the ransomware group "shadowbyt3$". I cannot confirm the accuracy of the information. However, I would be happy to share any official statement from the affected organization to provide clarification.