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
DDD-190716-221-082.PDFInfo Sheet: Boot Security Modes Recommendations (June 2019)6/1/2019
DDD-190716-950-081.PDFInfo Sheet: Blocking Unnecessary Advertising Web Content (July 2018)7/5/2018
DDD-190716-743-080.PDFInfo Sheet: Best Practices for Keeping Your Home Network Secure (September 2018)9/18/2018
Info Sheet: Adopting Encrypted DNS in Enterprise Environments (January 2021)Info Sheet: Adopting Encrypted DNS in Enterprise Environments (January 2021)1/14/2021
Info Sheet: Actively Manage Systems and Configurations (August 2019)Info Sheet: Actively Manage Systems and Configurations (August 2019)8/30/2019
DDD-190716-785-084.PDFInfo Sheet: 2018 Cybersecurity Highlights (October 2018)10/1/2018
CSI_ SELECTING_AND_USING_COLLABORATION_SERVICES_SECURELY_FULL_20200814.PDFInfo Sheet: (Full) Selecting and Safely Using Collaboration Services for Telework (November 2020 update)11/5/2020
DDD-200702-323-002.PDFInfo Sheet: (Full) Configuring IPsec Virtual Private Networks (October 2020 update)10/16/2020
CSI_ SELECTING_AND_USING_COLLABORATION_SERVICES_SECURELY_SHORT_20200814.PDFInfo Sheet: (Abridged) Selecting and Safely Using Collaboration Services for Telework (November 2020 update)11/5/2020
DDD-200702-489-003.PDFInfo Sheet: (Abridged) Configuring IPsec Virtual Private Networks (October 2020 update)10/16/2020
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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