What is Medusa ransomware and who is behind it?

Medusa's a RaaS group active since 2021, tracked as Storm-1175 by Microsoft. They double-extort via data theft and encryption, hitting 300+ critical orgs fast.

How does Medusa ransomware exploit vulnerabilities?

They weaponize new CVEs in days—zero-days in a week pre-disclosure. Chain flaws for RCE, drop webshells, exfil data, encrypt quick using LOLBins and tools like Mimikatz.

How to protect against Medusa ransomware attacks?

Inventory assets, patch urgently (Exchange, Ivanti, etc.), monitor perimeters, enforce zero-trust, hunt for persistence like RDP tweaks or Veeam cracks.

🦠 Ransomware & Malware

Medusa Ransomware: Zero-Days to Encryption in Under 24 Hours

Imagine a cyber thief picking your lock before you even know it's broken. Medusa ransomware does just that, slamming 300+ critical infrastructure victims by February 2025 with zero-day blitzes.

Threat Digest Apr 07, 2026 4 min read

Timeline graphic of Medusa ransomware attack from zero-day exploit to encryption

⚡ Key Takeaways

Medusa (Storm-1175) breaches to ransomware in hours/days, exploiting 16+ vulns including zero-days. 𝕏
Targets healthcare/finance hardest; double extortion amps pain beyond downtime. 𝕏
Defend with asset inventory, rapid patching, anomaly hunting—AI tools incoming shift. 𝕏

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#Medusa ransomware #Storm-1175 #double-extortion #zero-day exploits

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Originally reported by SecurityWeek

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