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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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Attackers sidestep encryption with spoofed apps and zero-click exploits to compromise 'high-value' mobile users CISA has warned that state-backed snoops and cyber-mercenaries are actively abusing commercial spyware to break into Signal and WhatsApp accounts, hijack devices, and quietly rummage through the phones of what the agency calls "high-value" users.…

The Register 26 Nov 2025, 12:32 a.m. CISA Compromise Encryption Exploit Facebook Mobile Spyware Warning Zero-Click

Don't believe everything you read Afraid of connecting to public Wi-Fi? Terrified to turn your Bluetooth on? You may be falling for "hacklore," tall tales about cybersecurity that distract you from real dangers. Dozens of chief security officers and ex-CISA officials have launched an effort and website to dispel these myths and show you how not to get hacked for real.…

The Register 25 Nov 2025, 9:01 a.m. Bluetooth CISA CISO Wireless

Agencies have until December 12 to mitigate flaw that was likely exploited before Big Red released fix CISA has ordered US federal agencies to patch against an actively exploited Oracle Identity Manager (OIM) flaw within three weeks – a scramble made more urgent by evidence that attackers may have been abusing the bug months before a fix was released.…

The Register 25 Nov 2025, 12:45 a.m. 0-Day Abuse CISA Flaw Oracle Patch

PLUS: CISA issues drone warning; China-linked DNS-hijacking malware; Prison for BTC Samourai; And more Infosec In Brief Researchers have urged users of the glob file pattern matching library to update their installations, after discovery of a years-old remote code execution flaw in the tool's CLI.…

The Register 24 Nov 2025, 11:46 a.m. China CISA DNS Flaw Library Malware Prison Remote Code Execution Research Warning