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 here.

ImageTitlePublication Date
 DDD-200730-216-040.PDFCybersecurity Advisory: Mitigate the GRUB2 BootHole Vulnerability7/30/2020
 CSA_DROVORUB_RUSSIAN_GRU_MALWARE_AUG_2020.PDFCybersecurity Advisory: Russian GRU 85th GTsSS Deploys Previously Undisclosed Drovorub Malware8/13/2020
 CSA_VMWARE ACCESS_U_OO_195076_20.PDFCybersecurity Advisory: Russian State-Sponsored Actors Exploiting Vulnerability in VMware Workspace ONE Access Using Compromised Credentials (December 2020)12/7/2020
 DDD-200702-489-003.PDFInfo Sheet: (Abridged) 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-200702-323-002.PDFInfo Sheet: (Full) Configuring IPsec Virtual Private Networks (October 2020 update)10/16/2020
 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-190716-785-084.PDFInfo Sheet: 2018 Cybersecurity Highlights (October 2018)10/1/2018
 Info Sheet: Actively Manage Systems and Configurations (August 2019)8/30/2019
 Info Sheet: Adopting Encrypted DNS in Enterprise Environments (January 2021)1/14/2021
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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