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
 CSI: Selecting and Hardening Remote Access VPN SolutionsCSI: Selecting and Hardening Remote Access VPN Solutions9/28/2021
 CSI: Keeping Safe on Social Media (August 2021 Update)CSI: Keeping Safe on Social Media (August 2021 Update)8/6/2021
 CSI: Keeping PowerShell: Security Measures to Use and EmbraceCSI: Keeping PowerShell: Security Measures to Use and Embrace6/22/2022
 CSI: IPv6 Security GuidanceCSI: IPv6 Security Guidance1/18/2023
 CSI: Deploying Secure Unified Communications/Voice and Video over IP Systems (Abridged) (June 2021)CSI: Deploying Secure Unified Communications/Voice and Video over IP Systems (Abridged) (June 2021)6/17/2021
 CSI: Commercial National Security Algorithm Suite 2.0 (CNSA 2.0) FAQCSI: Commercial National Security Algorithm Suite 2.0 (CNSA 2.0) FAQ9/7/2022
 CSI: Cisco Password Types: Best PracticesCSI: Cisco Password Types: Best Practices2/17/2022
 CSI: Avoid Dangers of Wildcard TLS Certificates and the ALPACA WeaknessCSI: Avoid Dangers of Wildcard TLS Certificates and the ALPACA Weakness10/7/2021
 CSA: Weak Security Controls and Practices Routinely Exploited for Initial AccessCSA: Weak Security Controls and Practices Routinely Exploited for Initial Access5/17/2022
 CSA: Understanding Mitigating Russian Cyber Threats to US Critical InfrastructureCSA: Understanding Mitigating Russian Cyber Threats to US Critical Infrastructure1/11/2022
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NSA Joint Federation Assurance Center (JFAC) Hardware Assurance Lab Cybersecurity Technical Reports:

ImageTitlePublication Date
 NSA CTR: DoD Microelectronics: Field Programmable Gate Array Best Practices – Threat CatalogNSA CTR: DoD Microelectronics: Field Programmable Gate Array Best Practices – Threat Catalog12/8/2022
 NSA CTR: DoD Microelectronics: Field Programmable Gate Array Level of Assurance 1 Best PracticesNSA CTR: DoD Microelectronics: Field Programmable Gate Array Level of Assurance 1 Best Practices12/8/2022
 NSA CTR: DoD Microelectronics: Field Programmable Gate Array Overall Assurance ProcessNSA CTR: DoD Microelectronics: Field Programmable Gate Array Overall Assurance Process12/8/2022
 NSA CTR: DoD Microelectronics: Third-Party IP Review Process for Level of Assurance 1NSA CTR: DoD Microelectronics: Third-Party IP Review Process for Level of Assurance 112/8/2022
 CTR: DoD Microelectronics: Levels of Assurance Definitions and ApplicationsCTR: DoD Microelectronics: Levels of Assurance Definitions and Applications7/14/2022
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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