Leak-site post naming Columbia University Information (Dental), captured by ThreatCluster
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Columbia University Information (Dental)

global secret group

Ransomware leak-site victim intelligence · EN

Data size
296 GB
Files
283,387
Views
283,387
Posted
Aug 16, 2026
Publication
Aug 16, 2026
Country
New York, US
Industry
Colleges & Universities

Summary

Written by ThreatCluster from victim profile, leak post, screenshot

The group claims to have exfiltrated and published 296 GB of data from Columbia University Information (Dental) (domain columbia.edu), consisting of 283,387 files and 11,268 folders. The leak post is listed on the group's leak site. The leak page identifies the victim as Columbia University Information (Dental), a United States-based entity in the Colleges & Universities sector.

Describes what the group claims on its leak site. A listing is not confirmation that a breach occurred.

Victim profile

Employees
0
Domains
columbia.edu

What was taken

Columbia University Information (Dental). Overview: Country: New York, US | Website: columbia.edu | Revenue: $6.6 Billion | Industry: Colleges & Universities | Employees: 20.000-25.000 | Properties: 296 GB (283,387 Files, 11,268 Folders). Detailed Analysis: For more than 250 years, Columbia has been a leader in higher education in the nation and around the world.

Data categories
DatabasesPIIEmailsMedical dataContracts
Leak site tags
AuctionColumbia UniversityDental

Leak-site images (7)

Images from the victim's leak listing. Thumbnails scraped from the onion page are blurred by default — click a thumbnail to view.

ThreatCluster capture
Screenshot of a deposit items detail report showing transaction details, including deposit tickets and checks, with amounts and dates.
onion leak page 802 KB
Collage of various identification cards, health insurance cards, and driver's licenses, displaying personal information and logos from different organizations.
onion leak page 1023 KB
Screenshot of a table displaying transaction details, including columns for account numbers, names, statuses, and transaction amounts.
onion leak page 624 KB
Screenshot of a financial spreadsheet titled "2018 Consolidated Budget" with multiple columns and rows detailing various budget categories and figures.
onion leak page 459 KB
Screenshot of a spreadsheet containing multiple rows and columns with data entries, including identifiers, names, and various attributes.
onion leak page 778 KB
Screenshot of a document containing a list of names, addresses, and associated data, formatted in columns.
onion leak page 568 KB