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Inactive · #12 by victimsRansomware group

Medusa

As of Oct 19, 2026, Medusa has listed 595 confirmed victims on its leak site since Jan 11, 2023, 1.8% of all victims tracked by Brandefense. Its most targeted country is United States (54.8% of its victims) and its most targeted sector is Consulting.

Medusa is a ransomware-as-a-service operation active since June 2021 that has targeted over 300 victims across critical infrastructure sectors including healthcare, education, legal, and manufacturing using double-extortion, with attacks surging 42% between 2023 and 2024 and a formal CISA advisory issued in early 2025.

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Confirmed Victims
595
Rank By Victims
#12
Last Leak-Site Post
Apr 26, 2026
Top Country
United States
Top Sector
Consulting

Victims Posted Per Month.

Medusa confirmed victims per month
MonthConfirmed victims
November 202511
December 20255
January 20263
February 20263
March 202615
April 20263
May 20260
June 20260
July 20260
August 20260
September 20260
October 2026 (month in progress)0
Updated continuously · figures as of Oct 19, 2026

Latest Medusa Victims.

Search all 595 →
Latest confirmed leak-site victims claimed by Medusa
VictimCountryIndustryData claimedPosted
Walman Optical
walman.com
USUnited StatesHealthcareNot stated
Northeast Missouri Rural Telephone
nemr.net
USUnited StatesTelecommunicationsNot stated
TouchSource
touchsource.com
USUnited StatesTechnologyNot stated
Big Thumb
bigthumb.com
USUnited StatesTechnologyNot stated
Live! Casino
livecasinocomparer.com
GBUnited KingdomHospitality and TourismNot stated
University of Mississippi Medical Center (@ummcdata)AEUnited Arab EmiratesNon-profit and Civil SocietyNot stated

How They Operate.

Medusa's threat actor profile lists 80 ATT&CK techniques, 23 exploited CVEs, 28 malware and tools, with its targets and related actors.

TTPs, CVEs and malware →

Who Medusa Targets.

Sectors

  1. Consulting447.4%
  2. Education and Research335.5%
  3. Healthcare264.4%
  4. Government and Public Sector254.2%
  5. Manufacturing254.2%

Countries

  1. USUnited States32654.8%
  2. CACanada488.1%
  3. GBUnited Kingdom416.9%
  4. ITItaly203.4%
  5. AUAustralia152.5%
Shares are of this group's confirmed victims.

History.


  1. First confirmed victim listed on its leak site

  2. First seen in Brandefense data

  3. Busiest month on record: 33 confirmed victims

  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.