Cisa | Tenu Tech Brief

Immediate Action Required: CISA Issues Emergency Directive to Secure Cisco SD-WAN Systems

• Immediate Action Required: CISA Issues Emergency Directive to Secure Cisco SD-WAN Systems WASHINGTON - The Cybersecurity and Infrastructure Security Agency (CISA) today issuedEme

Taiwan Security Firm Confirms Flaw Flagged by CISA Likely Exploited by Chinese APTs

• The Taiwan-based cybersecurity firm TeamT5 has confirmed that the vulnerability added recently by CISA to its Known Exploited Vulnerabilities (KEV) catalog was likely exploited b

CISA Adds Two Actively Exploited Roundcube Flaws to KEV Catalog

• CISA Adds Two Actively Exploited Roundcube Flaws to KEV Catalog The U.S. • Cybersecurity and Infrastructure Security Agency (CISA) on Fridayaddedtwo security flaws impacting Roun

CISA Navigates DHS Shutdown With Reduced Staff

• CISAwill remain operational during the DHS shutdown that commenced at 12:01 a.m. • on Saturday, February 14, 2026, although at a reduced capacity. • KEV is one area that remains.

CISA gives feds 3 days to patch actively exploited BeyondTrust flaw

• CISA gives feds 3 days to patch actively exploited BeyondTrust flaw February 16, 2026 07:33 AM 1 The U.S. • Cybersecurity and Infrastructure Security Agency (CISA) ordered federa

CISA Announces New Town Halls to Engage with Stakeholders on Cyber Incident Reporting for Critical Infrastructure

• CISA Announces New Town Halls to Engage with Stakeholders on Cyber Incident Reporting for Critical Infrastructure WASHINGTON - The Cybersecurity and Infrastructure Security Agenc

CISA's 2025 Year in Review: Driving Security and Resilience Across Critical Infrastructure

• CISA’s 2025 Year in Review: Driving Security and Resilience Across Critical Infrastructure WASHINGTON - The Cybersecurity and Infrastructure Security Agency (CISA) unveiled its20

CISA Releases Guide to Help Critical Infrastructure Users Adopt More Secure Communication

• CISA Releases Guide to Help Critical Infrastructure Users Adopt More Secure Communication WASHINGTON - The Cybersecurity and Infrastructure Security Agency (CISA) today released

CISA Orders Federal Agencies to Strengthen Edge Device Security Amid Rising Cyber Threats

• CISA Orders Federal Agencies to Strengthen Edge Device Security Amid Rising Cyber Threats WASHINGTON - The Cybersecurity and Infrastructure Security Agency (CISA) today issuedBin

CISA Urges Critical Infrastructure Organizations to Take Action Against Insider Threats

• CISA Urges Critical Infrastructure Organizations to Take Action Against Insider Threats WASHINGTON - The Cybersecurity and Infrastructure Security Agency (CISA) is calling on cri

CISA Releases Product Categories List to Propel Post-Quantum Cryptography Adoption Pursuant to President Trump's Executive Order 14306

• CISA releases first product categories list for post‑quantum cryptography (PQC) adoption. • List identifies hardware and software that support or will support PQC standards. • De

CISA, UK NCSC, FBI Unveil Principles to Combat Cyber Risks in OT

• CISA, UK NCSC, FBI Unveil Principles to Combat Cyber Risks in OT WASHINGTON - Today, the Cybersecurity and Infrastructure Security Agency (CISA), United Kingdom’s National Cyber

CISA Retires Ten Emergency Directives, Marking an Era in Federal Cybersecurity

• CISA Retires Ten Emergency Directives, Marking an Era in Federal Cybersecurity WASHINGTON - Today, the Cybersecurity and Infrastructure Security Agency (CISA) announced the succe

CISA Releases Dynamic New Guide for Stadium and Arena Owners to Fortify Operations, Mitigate Vulnerabilities and Elevate Emergency Preparedness

• CISA Releases Dynamic New Guide for Stadium and Arena Owners to Fortify Operations, Mitigate Vulnerabilities and Elevate Emergency Preparedness WASHINGTON - Today, the Cybersecur

Opening Doors to the Future: CISA Announces Participation in the CyberCorps® Scholarship for Service (SFS)

• Opening Doors to the Future: CISA Announces Participation in the CyberCorps® Scholarship for Service (SFS) WASHINGTON - Today, the Cybersecurity and Infrastructure Security Agenc

CISA Shares Lessons Learned from an Incident Response Engagement

• CISA Shares Lessons Learned from an Incident Response Engagement Advisory at a Glance Executive Summary | CISA began incident response efforts at a U.S. • federal civilian execut

CISA and USCG Identify Areas for Cyber Hygiene Improvement After Conducting Proactive Threat Hunt at US Critical Infrastructure Organization

• CISA and USCG Identify Areas for Cyber Hygiene Improvement After Conducting Proactive Threat Hunt at US Critical Infrastructure Organization Summary The Cybersecurity and Infrast

Ransomware Actors Exploit Unpatched SimpleHelp Remote Monitoring and Management to Compromise Utility Billing Software Provider

• Ransomware actors target unpatched SimpleHelp RMM to breach utility billing software provider customers. • Vulnerability CVE-2024-57727, a path traversal flaw, exploited in Simpl

Threat Actors Deploy LummaC2 Malware to Exfiltrate Sensitive Data from Organizations

• FBI & CISA issue joint advisory on LummaC2 infostealer targeting critical infrastructure. • Malware infiltrates networks, exfiltrates sensitive data via spearphishing links and a

Fast Flux: A National Security Threat

• Fast flux hides malicious server locations by rapidly changing DNS records. • Enables cybercriminals and nation-state actors to evade detection and maintain C2. • Resilient, high

#StopRansomware: Medusa Ransomware

• Patch OS, software, firmware promptly to close known vulnerabilities across all systems. • Segment networks to limit lateral movement from infected devices and protect critical a