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
 DDD-190716-492-056.PDFAdvisory: RSA SecureID Token Authentication Agent Vulnerabilities (December 2017)12/11/2017
 DDD-190716-364-055.PDFAdvisory: RSA Key Generation Vulnerability Affecting Trusted Platform Modules (October 2017)10/24/2017
 DDD-200723-941-003.PDFAdvisory: Protect Operational Technologies and Control Systems against Cyber Attacks (July 2020)7/23/2020
 DDD-190716-858-060.PDFAdvisory: Patch Remote Desktop Services On Legacy Versions of Windows (June 2019)6/1/2019
 DDD-200716-666-047.PDFAdvisory: Patch Critical Vulnerability in Windows Servers using DNS Server Role (July 2020)7/16/2020
 DDD-191030-204-002.PDFAdvisory: Patch Critical Vulnerability In Atlassian Confluence (October 2019)10/30/2019
 DDD-190716-553-054.PDFAdvisory: Mitigations for Key Reinstallation Attacks Against WI-FI Protected Access II (WPA2) (October 2017)10/18/2017
 DDD-191007-044-022.PDFAdvisory: Mitigating Recent VPN Vulnerabilities (October 2019)10/7/2019
 DDD-200110-416-020.PDFAdvisory: Mitigate CVE201919781 Critical Vulnerability in Citrix ADC (January 2020)1/10/2020
 DDD-200528-111-002.PDFAdvisory: Exim Mail Transfer Agent Actively Exploited by Russian GRU Cyber Actors (May 2020)5/28/2020
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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