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-200603-645-067.PDFTech Report: TENS Virtual Machine Guide (June 2020)6/3/2020
 DDD-200528-111-002.PDFAdvisory: Exim Mail Transfer Agent Actively Exploited by Russian GRU Cyber Actors (May 2020)5/28/2020
 DDD-200609-232-015.PDFInfo Sheet: Detect and Prevent Web Shell Malware (April 2020)4/22/2020
 DDD-200122-993-002.PDFInfo Sheet: Mitigating Cloud Vulnerabilities (January2020)1/22/2020
 DDD-200114-032-024.PDFAdvisory: Critical Crypto Vulnerability in Microsoft Windows 10 (January 2020)1/14/2020
 DDD-200110-416-020.PDFAdvisory: Mitigate CVE201919781 Critical Vulnerability in Citrix ADC (January 2020)1/10/2020
 DDD-191216-685-015.PDFInfo Sheet: Managing Risk From Transport Layer Security Inspection (16 December 2019)12/17/2019
 DDD-191030-204-002.PDFAdvisory: Patch Critical Vulnerability In Atlassian Confluence (October 2019)10/30/2019
 DDD-191030-925-002.PDFTech Report: Hardening SIEM Solution (October 2019)10/30/2019
 DDD-191018-171-002.PDFAdvisory: Turla Group Exploits Iranian APT (October 2019)10/21/2019
 DDD-191007-044-022.PDFAdvisory: Mitigating Recent VPN Vulnerabilities (October 2019)10/7/2019
 DDD-190925-139-001.PDFAdvisory: Continued Use Of Adobe Flash Invites Compromise (September 2019)9/25/2019
 Info Sheet: Update and Upgrade Software Immediately (August 2019)Info Sheet: Update and Upgrade Software Immediately (August 2019)8/30/2019
 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
 Info Sheet: Actively Manage Systems and Configurations (August 2019)Info Sheet: Actively Manage Systems and Configurations (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