Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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Domain authority

Definitions:

  An FCKMS role that is responsible for determining whether another domain’s FCKMS Security Policy is equivalent to or compatible with its own domain policy. The FCKMS system authority often performs this role.
Sources:
NIST SP 800-152