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: Actively Manage Systems and Configurations (August 2019)Info Sheet: Actively Manage Systems and Configurations (August 2019)8/30/2019
Info Sheet: Adopting Encrypted DNS in Enterprise Environments (January 2021)Info Sheet: Adopting Encrypted DNS in Enterprise Environments (January 2021)1/14/2021
DDD-190716-743-080.PDFInfo Sheet: Best Practices for Keeping Your Home Network Secure (September 2018)9/18/2018
DDD-190716-950-081.PDFInfo Sheet: Blocking Unnecessary Advertising Web Content (July 2018)7/5/2018
DDD-190716-221-082.PDFInfo Sheet: Boot Security Modes Recommendations (June 2019)6/1/2019
DDD-190716-058-083.PDFInfo Sheet: Cloud Security Basics (August 2018)8/29/2018
Info Sheet: Continuously Hunt for Network Intrusions (August 2019)Info Sheet: Continuously Hunt for Network Intrusions (August 2019)8/30/2019
Info Sheet: Defend Privileges and Accounts (August 2019)Info Sheet: Defend Privileges and Accounts (August 2019)8/30/2019
DDD-190716-296-078.PDFInfo Sheet: Defending Your DNS Infrastructure (June 2019)6/1/2019
DDD-200609-232-015.PDFInfo Sheet: Detect and Prevent Web Shell Malware (April 2020)4/22/2020
ELIMINATING_OBSOLETE_TLS_UOO197443-20.PDFInfo Sheet: Eliminating Obsolete TLS Protocol Configurations (January 2021)1/5/2021
Info Sheet: Embracing a Zero Trust Security Model (February 2021)Info Sheet: Embracing a Zero Trust Security Model (February 2021)2/25/2021
Info Sheet: Enforce Signed Software Execution Policies (August 2019)Info Sheet: Enforce Signed Software Execution Policies (August 2019)8/30/2019
Info Sheet: Exercise a System Recovery Plan (August 2019)Info Sheet: Exercise a System Recovery Plan (August 2019)8/30/2019
HARDENING_NETWORK_DEVICES.PDFInfo Sheet: Hardening Network Devices (August 2020)8/18/2020
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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