NSA Cybersecurity Advisories & Guidance


NSA leverages its elite technical capability to develop advisories and mitigations on evolving cybersecurity threats.

Browse or search our repository of advisories, info sheets, tech reports, and operational risk notices listed below. Some resources have access requirements.

For a subset of cybersecurity products focused on telework and general network security for end users, view our Telework and Mobile Security Guidance page here.

ImageTitlePublication Date
 CSA: Russian GRU Global Brute Force Campaign7/1/2021
 CSA: Russian State Sponsored and Criminal Cyber Threats to Critical Infrastructure4/20/2022
 CSA: Russian State Sponsored Cyber Actors Target CDC Networks2/16/2022
 CSA: Russian SVR Targets U.S. and Allied Networks4/15/2021
 CSA: Stop Malicious Cyber Activity Against Connected Operational Technology4/29/2021
 CSA: Understanding Mitigating Russian Cyber Threats to US Critical Infrastructure1/11/2022
 CSA: Weak Security Controls and Practices Routinely Exploited for Initial Access5/17/2022
 CSI: Avoid Dangers of Wildcard TLS Certificates and the ALPACA Weakness10/7/2021
 CSI: Cisco Password Types: Best Practices2/17/2022
 CSI: Commercial National Security Algorithm Suite 2.0 (CNSA 2.0) FAQ9/7/2022
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Additional Documents

Some guidance is protected and requires use of a DoD Common Access Card (CAC) to access. Visit https://cyber.mil/nsa/cybersecurity-advisories-and-technical-guidance/ to access the following and other protected documents:

  • Avoid Dangers of Wildcard TLS Certificates and the ALPACA Technique (FOUO version)
  • Protecting VSAT Communications
  • Quantum Security of Symmetric Cryptography and Hash Functions: A Review
  • Securing AWS S3
  • Security Considerations for Office 365 Government Customers