Medusalocker Ransomware

Medusalocker is a ransomware threat group that has disclosed 39 victims in publicly accessible leak site data, representing 0.2% of all ransomware attacks tracked in this database. The earliest victim disclosure attributed to Medusalocker in our dataset dates to July 2026.

Geographically, Medusalocker has targeted organisations in 17 countries. The most frequently targeted nation is United States with 9 victim organisations. Other heavily targeted nations include Brazil, United Kingdom, Germany.

Industry-wise, Medusalocker shows a concentration in the Business Services, Manufacturing, Public Sector sectors. These industries are frequently targeted because they manage sensitive data, critical operations, or have lower tolerance for operational downtime — conditions that increase ransom payment likelihood.

Like most modern ransomware operations, Medusalocker likely employs a double extortion model: encrypting victim files while simultaneously exfiltrating data, creating dual pressure to pay the ransom. Victim organisations that refuse payment face having their data published on the group's dark web leak site.

Note: This profile is generated from public leak site disclosures aggregated via the ransomware.live API. Data is updated automatically. The victim table below shows the 11 most recent cached victims; the total victim count (39) reflects the complete database.