medusa
Intelligence Profile
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.
Threat Analysis
medusa is a ransomware operation that deploys encryption-based extortion against organizations globally. This group maintains a data leak site (DLS) to pressure victims into paying ransom demands.
Financially motivated threat actors like medusa prioritize monetary gain through methods such as ransomware deployment, banking trojans, cryptocurrency theft, BEC scams, or credential harvesting for resale on underground markets.
Ransomware Victims (572)
CTIWATCH tracks 572 organizations claimed as victims by medusa on its data leak site, with attack dates, sectors and countries.
View full victims list →Known Campaigns
Medusa is conducting an active ransomware campaign targeting organizations across 0 countries. 13 confirmed victims recorded in the last 45 days. Campaign status: ACTIVE (last activity 13 Apr 2026).