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
CSI: Keeping Safe on Social Media (August 2021 Update)CSI: Keeping Safe on Social Media (August 2021 Update)8/6/2021
CSA: Chinese State Sponsored Cyber TTPsCSA: Chinese State Sponsored Cyber TTPs7/19/2021
CSA: Russian GRU Global Brute Force CampaignCSA: Russian GRU Global Brute Force Campaign7/1/2021
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
CTR: Deploying Secure Unified Communications/Voice and Video over IP Systems (June 2021)CTR: Deploying Secure Unified Communications/Voice and Video over IP Systems (June 2021)6/17/2021
Info Sheet: Selecting a Protective DNS Service (May 2021 Update)Info Sheet: Selecting a Protective DNS Service (May 2021 Update)5/31/2021
Potential Threat Vectors To 5G InfrastructurePotential Threat Vectors To 5G Infrastructure5/10/2021
ADVISORY FURTHER TTPS ASSOCIATED WITH SVR CYBER ACTORS.PDFCybersecurity Advisory: Further TTPs associated with SVR cyber actors5/7/2021
CSA: Stop Malicious Cyber Activity Against Connected Operational TechnologyCSA: Stop Malicious Cyber Activity Against Connected Operational Technology4/29/2021
CSA: Russian SVR Targets U.S. and Allied NetworksCSA: Russian SVR Targets U.S. and Allied Networks4/15/2021
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: Adopting Encrypted DNS in Enterprise Environments (January 2021)Info Sheet: Adopting Encrypted DNS in Enterprise Environments (January 2021)1/14/2021
ELIMINATING_OBSOLETE_TLS_UOO197443-20.PDFInfo Sheet: Eliminating Obsolete TLS Protocol Configurations (January 2021)1/5/2021
AUTHENTICATION_MECHANISMS_CSA_EXEC_U_OO_198854_20.PDFCybersecurity Advisory: (Abridged) Detecting Abuse of Authentication Mechanisms (December 2020)12/17/2020
AUTHENTICATION_MECHANISMS_CSA_U_OO_198854_20.PDFCybersecurity Advisory: (Full) Detecting Abuse of Authentication Mechanisms (December 2020)12/17/2020
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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