Summary| Cybersecurity and Infrastructure Security Agency CISA
Medusa is a ransomware-as-a-service (RaaS) variant first identified in June 2021. As of February 2025, Medusa developers and affiliates have impacted over 300 victims from a variety of critical infrastructure sectors.| Cybersecurity and Infrastructure Security Agency CISA
Summary| Cybersecurity and Infrastructure Security Agency CISA
SUMMARY| Cybersecurity and Infrastructure Security Agency CISA
SUMMARY| Cybersecurity and Infrastructure Security Agency CISA
There are 16 critical infrastructure sectors whose assets, systems, and networks, whether physical or virtual, are considered so vital to the United States that their incapacitation or destruction would have a debilitating effect on security, national economic security, national public health or safety, or any combination thereof. Presidential Policy Directive 21 (PPD-21): Critical Infrastructure Security and Resilience advances a national policy to strengthen and maintain secure, functioning...| Cybersecurity and Infrastructure Security Agency CISA
SUMMARY| Cybersecurity and Infrastructure Security Agency CISA
SUMMARY| Cybersecurity and Infrastructure Security Agency CISA
Updated June 16, 2023| Cybersecurity and Infrastructure Security Agency CISA
SUMMARY| Cybersecurity and Infrastructure Security Agency CISA
Summary| Cybersecurity and Infrastructure Security Agency CISA