CISA Cybersecurity Advisories

21 April 2025

• Fast Flux: A National Security Threat

  Executive summary

  Many networks have a gap in their defenses for

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• #StopRansomware: Medusa Ransomware

  Summary

  Note: This joint Cybersecurity Advisory is

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• #StopRansomware: Ghost (Cring) Ransomware

  Summary

  Note: This joint Cybersecurity Advisory

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