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#StopRansomware: MedusaLocker


CISA, the Federal Bureau of Investigation (FBI), the Department of the Treasury (Treasury), and the Financial Crimes Enforcement Network (FinCEN) have released a joint Cybersecurity Advisory (CSA), #StopRansomware: MedusaLocker, to provide information on MedusaLocker ransomware. MedusaLocker actors target vulnerabilities in Remote Desktop Protocol (RDP) to access victims’ networks. Note: this joint #StopRansomware CSA is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors.

CISA, FBI, Treasury and FinCEN encourage network defenders to examine their current cybersecurity posture and apply the recommended mitigations in this joint CSA, which include:

  • Prioritize remediating known exploited vulnerabilities.
  • Train users to recognize and report phishing attempts.
  • Enable and enforce multifactor authentication.

See #StopRansomware: MedusaLocker to learn about MedusaLocker actors’ tactics, techniques, and procedures and the recommended mitigations. Additionally, review the U.S. government resource StopRansomware.gov for more guidance on ransomware protection, detection, and response. 


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