Cybersecurity Advisories & Technical 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
CSI_MULTIFACTOR_AUTHENTICATION_SOLUTIONS_UOO17091520.PDFInfo Sheet: Multifactor Authentication Solutions (October 2020 update)10/16/2020
CSA_CHINESE_EXPLOIT_VULNERABILITIES_UOO179811.PDFCybersecurity Advisory: Chinese State-Sponsored Actors Exploit Publicly Known Vulnerabilities (October 2020)10/20/2020
DDD-200728-912-017.PDFInfo Sheet: Mobile Device Best Practices (October 2020)10/23/2020
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
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
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
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
ELIMINATING_OBSOLETE_TLS_UOO197443-20.PDFInfo Sheet: Eliminating Obsolete TLS Protocol Configurations (January 2021)1/5/2021
CSI_ADOPTING_ENCRYPTED_DNS_U_OO_102904_21.PDFInfo Sheet: Adopting Encrypted DNS in Enterprise Environments (January 2021)1/14/2021
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Additional Documents

The following resources require use of a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate. Read more information about these access requirements.