Russia hack claims: What is the Cybersecurity and Infrastructure Security Agency (CISA)? - Fox News

The hack compromised federal agencies and "critical infrastructure" in a sophisticated attack that was hard to detect and will be difficult to undo, the cybersecurity agency said in an unusual warning message Thursday. https://www.foxnews.com/politics/russia-hack-claims-what-is-the-cybersecurity-infrastructure-security-agency-cisa