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Active · #90 by victimsRansomware group

Insomnia

As of Oct 19, 2026, Insomnia has listed 68 confirmed victims on its leak site since Feb 14, 2025, 0.2% of all victims tracked by Brandefense. Its most targeted country is United States (85.3% of its victims) and its most targeted sector is Healthcare.

Insomnia is a data-theft and extortion group that emerged in October 2025, targeting primarily US-based healthcare organizations, stealing patient files and threatening public exposure rather than encrypting files, and avoiding former Soviet states, consistent with Russian-speaking cybercrime norms.

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Confirmed Victims
68
Rank By Victims
#90
Last Leak-Site Post
Sep 17, 2026
Top Country
United States
Top Sector
Healthcare

Victims Posted Per Month.

Insomnia confirmed victims per month
MonthConfirmed victims
November 20255
December 20255
January 20268
February 202619
March 20267
April 20262
May 20263
June 20260
July 20265
August 20266
September 20263
October 2026 (month in progress)0
Updated continuously · figures as of Oct 19, 2026

Latest Insomnia Victims.

Search all 68 →
Latest confirmed leak-site victims claimed by Insomnia
VictimCountryIndustryData claimedPosted
Praxis EMR
praxisemr.com
USUnited StatesTechnologyNot stated
Wiggins, Childs, Pantazis, Fisher, & Goldfarb LLC
wigginschilds.com
USUnited StatesLegal ServicesNot stated
Massey, Stotser & Nichols
msnattorneys.com
USUnited StatesLegal ServicesNot stated
Metro Tulsa Foot
tulsafoot.com
USUnited StatesHealthcareNot stated
Metropolitan Community Health Services
agapechc.org
USUnited StatesHealthcareNot stated
***********UnknownUnknownNot stated

How They Operate.

Insomnia's threat actor profile lists 1 malware and tools, with its targets and related actors.

TTPs, CVEs and malware →

Who Insomnia Targets.

Sectors

  1. Healthcare2130.9%
  2. Legal Services68.8%
  3. Technology68.8%
  4. Consulting57.4%
  5. Financial Services45.9%

Countries

  1. USUnited States5885.3%
  2. SGSingapore22.9%
  3. BRBrazil11.5%
  4. PAPanama11.5%
Shares are of this group's confirmed victims.

History.


  1. First confirmed victim listed on its leak site

  2. Busiest month on record: 19 confirmed victims

  3. First seen in Brandefense data

  4. Most recent leak-site post

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Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.