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
 CSA: Ongoing Cyber Threats to U.S. Water and Wastewater SystemsCSA: Ongoing Cyber Threats to U.S. Water and Wastewater Systems10/14/2021
 CSA: New Sandworm malware Cyclops Blink replaces VPNFilterCSA: New Sandworm malware Cyclops Blink replaces VPNFilter2/23/2022
 CSA: Mitigating Log4Shell and Other Log4j-Related VulnerabilitiesCSA: Mitigating Log4Shell and Other Log4j-Related Vulnerabilities12/22/2021
 CSA: Iranian Islamic Revolutionary Guard Corps-Affiliated Cyber Actors Exploiting Vulnerabilities for Data Extortion and Disc Encryption for Ransom OperationsCSA: Iranian Islamic Revolutionary Guard Corps-Affiliated Cyber Actors Exploiting Vulnerabilities for Data Extortion and Disc Encryption for Ransom Operations9/14/2022
 CSA: Iranian Government-Sponsored Actors Conduct Cyber OperationsCSA: Iranian Government-Sponsored Actors Conduct Cyber Operations2/24/2022
 CSA: Impacket, Custom Exfiltration Tools Used to Steal Sensitive Information from Defense Industrial Base OrganizationCSA: Impacket, Custom Exfiltration Tools Used to Steal Sensitive Information from Defense Industrial Base Organization10/4/2022
 CSA: Control System Defense: Know the OpponentCSA: Control System Defense: Know the Opponent9/22/2022
 CSA: Conti Ransomware (March 2022 Update)CSA: Conti Ransomware (March 2022 Update)3/9/2022
 CSA: Commercial National Security Algorithm Suite 2.0 (CNSA 2.0)CSA: Commercial National Security Algorithm Suite 2.0 (CNSA 2.0)9/7/2022
 CSA: Chinese State Sponsored Cyber TTPsCSA: Chinese State Sponsored Cyber TTPs7/19/2021
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NSA Joint Federation Assurance Center (JFAC) Hardware Assurance Lab Cybersecurity Technical Reports:

ImageTitlePublication Date
 NSA CTR: DoD Microelectronics: Field Programmable Gate Array Best Practices – Threat CatalogNSA CTR: DoD Microelectronics: Field Programmable Gate Array Best Practices – Threat Catalog12/8/2022
 NSA CTR: DoD Microelectronics: Field Programmable Gate Array Level of Assurance 1 Best PracticesNSA CTR: DoD Microelectronics: Field Programmable Gate Array Level of Assurance 1 Best Practices12/8/2022
 NSA CTR: DoD Microelectronics: Field Programmable Gate Array Overall Assurance ProcessNSA CTR: DoD Microelectronics: Field Programmable Gate Array Overall Assurance Process12/8/2022
 NSA CTR: DoD Microelectronics: Third-Party IP Review Process for Level of Assurance 1NSA CTR: DoD Microelectronics: Third-Party IP Review Process for Level of Assurance 112/8/2022
 CTR: DoD Microelectronics: Levels of Assurance Definitions and ApplicationsCTR: DoD Microelectronics: Levels of Assurance Definitions and Applications7/14/2022
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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