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US-CERT Alerts

Get the latest updates from US-CERT Alerts directly as they happen.

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Latest posts

Last updated 15 days ago

CISA Shares Lessons Learned from an Incident Response Engagement

16 days ago

Advisory at a Glance Executive Summary CISA began incident response efforts at...

Countering Chinese State-Sponsored Actors Compromise of Networks Worldwide to Feed Global Espionage System

about 1 month ago

Executive summary People’s Republic of China (PRC) state-sponsored cyber threat actors are...

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

2 months ago

Summary The Cybersecurity and Infrastructure Security Agency (CISA) and U.S. Coast Guard...

#StopRansomware: Interlock

3 months ago

Summary Note: This joint Cybersecurity Advisory is part of an ongoing #StopRansomware...

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

4 months ago

Summary The Cybersecurity and Infrastructure Security Agency (CISA) is releasing this advisory...

Threat Actors Deploy LummaC2 Malware to Exfiltrate Sensitive Data from Organizations

5 months ago

Summary The Federal Bureau of Investigation (FBI) and the Cybersecurity and Infrastructure...

AI Data Security: Best Practices for Securing Data Used to Train & Operate AI Systems

5 months ago

Executive summary This Cybersecurity Information Sheet (CSI) provides essential guidance on securing...

Russian GRU Targeting Western Logistics Entities and Technology Companies

5 months ago

Executive Summary This joint cybersecurity advisory (CSA) highlights a Russian state-sponsored cyber...

Fast Flux: A National Security Threat

6 months ago

Executive summary Many networks have a gap in their defenses for detecting...

#StopRansomware: Medusa Ransomware

7 months ago

Summary Note: This joint Cybersecurity Advisory is part of an ongoing #StopRansomware...

#StopRansomware: Ghost (Cring) Ransomware

8 months ago

Summary Note: This joint Cybersecurity Advisory is part of an ongoing #StopRansomware...

Threat Actors Chained Vulnerabilities in Ivanti Cloud Service Applications

9 months ago

Note: The CVEs in this advisory are unrelated to vulnerabilities (CVE-2025-0282 and...