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Medusa Ransomware has been utilized in attacks since at least 2021. Medusa Ransomware has been known to be utilized in conjunction with living off the land techniques and remote management software. Medusa Ransomware has been used in campaigns associated with “double extortion” ransomware activity, where data is exfiltrated from victim environments prior to encryption, with threats to publish files if a ransom is not paid. Medusa Ransomware software was initially a closed ransomware variant which later evolved to a Ransomware as a Service (RaaS). Medusa Ransomware has impacted victims from a diverse range of sectors within a multitude of countries, and it is assessed Medusa Ransomware is used in an opportunistic manner.(Citation: CISA Medusa Group Medusa Ransomware March 2025)(Citation: Security Scorecard Medusa Ransomware January 2024)(Citation: Palo Alto Unit 42 Medusa Group Medusa Ransomware January 2024)(Citation: Broadcom Medusa Ransomware Medusa Group March 2025)