Ransomware victim disclosure
← All victimsYOKOSUKA GAKUIN
Claimed by Rhysida · listed 5 months ago
Status timeline
- Listed
Dec 15, 2025
- Data leaked
At a glance
About the victim
AI dossier — public-source company profileYokosuka Gakuin is a private school located in Yokosuka, Kanagawa Prefecture, Japan, established in 1950. The institution provides primary and/or secondary education to students in the Yokosuka area. No further operational details are available from the public site.
- Industry
- Private K-12 Education
- Address
- Yokosuka, Kanagawa Prefecture, Japan
- Founded
- 1950
Attack summary
Severity: high — 683 GB of data across 403,050 files has been fully published publicly. A private school likely holds student PII, guardian information, and staff records, constituting regulated personal data on minors, which warrants a high severity rating.Rhysida claims to have exfiltrated approximately 683 GB of data comprising 403,050 files from Yokosuka Gakuin and has published all files to public access.
Data the group says was taken
AI dossier — extracted from the leak post- School administrative files
- Student records (inferred)
- Staff records (inferred)
- Internal documents (403,050 files, 683 GB)
What the group claims
YOKOSUKA GAKUIN
The leak post
captured from the group's siteSTELIA North America is an aerospace and defence company specializing in the design, development, and manufacturing of composites.10 TB of confidential data!Data from major partner companies, such as: Lockheed Martin, Northrop Grumman, Sikorsky, Leonardo, L3Harris, Airbus Atlantic, Boeing, Bombardier, De Havilland, ARDE, MDA. Data Catalog: 9,3 Tb, 4 324 287 Files All files was uploaded to public access, data hunters, enjoy [Southold Town Senior ServicesSouthold Police Department](https://www.southoldtownny.gov) The Town of Southold, New York provides various government services including forms and permits, online payments, and notifications for residents. Southold Police Department is a company that operates in the Local industry. Data Catalog: 1,7 Tb, 767 693 Files All files was uploaded to public access, data hunters, enjoy Rohner designs and builds high-quality, custom paint booths and manufactured industrial paint systems. Our quality and service, cutting-edge technology, and engineering experience provide the best value in the finishing equipment industry. Data Catalog: 3 Tb, 3 924 397 Files All files was uploaded to public access, data hunters, enjoy The Cheyenne and Ar…
Source
Indexed 5 months agoThis page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.
