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.

To read our complete series on protecting DoD microelectronics from adversary influence, view our DoD Microelectronics Guidance page.
 

ImageTitlePublication Date
Info Sheet: Top 10 Mitigation Strategies (March 2018)Info Sheet: Top 10 Mitigation Strategies (March 2018)7/16/2019
DDD-190716-715-072.PDFInfo Sheet: Steps to Secure Web Browsing (May 2018)5/1/2018
Info Sheet: Selecting a Protective DNS Service (May 2021 Update)Info Sheet: Selecting a Protective DNS Service (May 2021 Update)5/31/2021
Info Sheet: Segment Networks and Deploy Application-Aware Defenses (September 2019)Info Sheet: Segment Networks and Deploy Application-Aware Defenses (September 2019)8/30/2019
DDD-200709-749-028.PDFInfo Sheet: Operating on a Compromised Network (July 2014)7/1/2014
DDD-190716-796-079.PDFInfo Sheet: NCTOC Top 5 Security Operations Center (SOC) Principles (March 2018)3/29/2018
DDD-190719-576-004.PDFInfo Sheet: NCTOC Top 5 Security Operations Center (SOC) Principles (March 2018)3/29/2018
DDD-190716-916-070.PDFInfo Sheet: Mobile Device Best Practices When Traveling OCONUS (May 2018)5/1/2018
Info Sheet: Mobile Device Best Practices (October 2020)Info Sheet: Mobile Device Best Practices (October 2020)10/23/2020
DDD-200122-993-002.PDFInfo Sheet: Mitigating Cloud Vulnerabilities (January2020)1/22/2020
DDD-191216-685-015.PDFInfo Sheet: Managing Risk From Transport Layer Security Inspection (16 December 2019)12/17/2019
DDD-190716-967-086.PDFInfo Sheet: Limiting ptrace on Production Linux Systems (May 2019)5/1/2019
DDD-200804-085-006.PDFInfo Sheet: Limiting Location Data Exposure8/4/2020
Info Sheet: Leverage Modern Hardware Security Features (August 2019)Info Sheet: Leverage Modern Hardware Security Features (August 2019)8/30/2019
Info Sheet: Integrate Threat Reputation Services (August 2019)Info Sheet: Integrate Threat Reputation Services (August 2019)8/30/2019
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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