Federal Agencies Issue New Advisory on Medusa Ransomware Threat
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Federal Agencies Issue New Advisory on Medusa Ransomware Threat

CISA, FBI, and MS-ISAC Warn Critical Infrastructure Sectors, Urge Immediate Cybersecurity Measures

WASHINGTON — The Cybersecurity and Infrastructure Security Agency (CISA), along with the FBI and MS-ISAC, has released a new #StopRansomware advisory warning organizations about the ongoing threat of Medusa ransomware attacks.

Medusa, a ransomware-as-a-service (RaaS) operation, has impacted more than 300 victims across critical infrastructure sectors, including healthcare, education, and manufacturing. According to the advisory, Medusa actors often gain access through phishing attacks and by exploiting unpatched software vulnerabilities.

Key Recommendations for Protection:

  • Keep systems, software, and firmware fully updated and patched.

  • Segment networks to prevent the spread of ransomware once inside.

  • Filter network traffic to block connections from unknown or untrusted sources.

CISA urges IT and cybersecurity teams to review the full advisory and immediately implement these protections to reduce risk and minimize potential impact.

Additional guidance, detection tips, and mitigation resources are available at stopransomware.gov.