American Hospital Association July 24, 2025
The FBI, Cybersecurity and Infrastructure Security Agency, Department of Health and Human Services, and Multi-State Information Sharing and Analysis Center July 22 released a joint advisory detailing malicious activity from Interlock ransomware. Activity was first discovered in September 2024 and as recently as June, targeting various organizations and critical infrastructure. The agencies said they are aware of Interlock encryptors designed for Windows and Linux operating systems and have observed cyber actors obtaining access using an uncommon method of drive-by download from compromised legitimate websites, among other tactics. The advisory includes mitigation strategies to help protect against the ransomware.
“Interlock has been directly implicated...
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