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Leak-site post naming mankatoclinic.com, captured by ThreatCluster

mankatoclinic.com

chaos

Ransomware leak-site victim intelligence

Data size
610 Gb
Views
41,648
Posted
Sep 10, 2026
Country
US
Industry
Healthcare

Summary

Written by ThreatClusterfrom site fields, victim profile, leak post, screenshot

The Chaos group claims to have exfiltrated 610 GB of data from Mankato Clinic (mankatoclinic.com), with the data published on their leak site in countdown status. The leak page states a leaked data size of 610 GB and provides a sample of leaked data. The victim profile on the leak page lists the domain mankatoclinic.com, headquartered in Mankato, Minnesota, with over 750 employees. These are the group’s claims; no independent confirmation is provided here.

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

Victim profile

Employees
0

What was taken

The Mankato Clinic was founded Mankato, Minnesota in 1916, by five area physicians who believed that a comprehensive, multi-specialty group practice offered the best means of providing quality health care to the residents of southern Minnesota. The mission of the Mankato Clinic is to improve the hea…

Also stated on the leak page

Fields this group publishes that do not map to a standard column. Labels are the site's own.

Leaked size
610 Gb
Sample of leaked data
http://zebpn5espkgmgo2g4y7mdolit2yacumbeolq3w34sscphmxavfxpygad.onion/Mankato

Leak-site images (1)

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

ThreatCluster capture