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Stay informed on the latest CISA updates, guidelines, and alerts critical for robust information security and cyber threat prevention.

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Cybersecurity and Infrastructure Security Agency (CISA) is the U.S. Department of Homeland Security agency for reducing cyber and physical risks to critical infrastructure and federal civilian networks. Created by the 2018 CISA Act, it works with government and industry, publishes alerts and guidance, and coordinates assistance during significant incidents. Its direct federal-network role chiefly covers the Federal Civilian Executive Branch, including .gov; private-sector engagement is often voluntary or sector-specific.

Practitioners use CISA advisories and the Known Exploited Vulnerabilities catalog to prioritize patching where exploitation has been observed, and consult applicable directives and incident-response guidance. CISA supports vulnerability reporting and promotes controls such as multifactor authentication, logging, and tested recovery. A CISA alert is an actionable risk signal, not proof every organization is affected; teams should verify product, version, exposure, and obligations.

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US Cyber Defense Agency Was Not Initially Aware Hackers Were Part of Salt TyphoonThe U.S. federal government's first hint that Chinese hackers penetrated American telecommunications infrastructure came from telemetry on government networks, said Jen Easterly, director of the Cybersecurity and Infrastructure Security Agency.

US CISA Releases Guidance to Streamline AI Cyber Incident Information SharingThe Cybersecurity and Infrastructure Security Agency released a playbook Tuesday through its flagship public-private collaborative to help guide public-private information sharing around artificial intelligence cybersecurity incidents while detailing federal actions to strengthen shared defense.