U.S. flag   An official website of the United States government
Dot gov

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

Https

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

Computer Security Resource Center

Computer Security Resource Center

    Glossary
A  |  B  |  C  |  D  |  E  |  F  |  G  |  H  |  I  |  J  |  K  |  L  |  M  |  N  |  O  |  P  |  Q  |  R  |  S  |  T  |  U  |  V  |  W  |  X  |  Y  |  Z

proscribed information

Definition(s):

   Top Secret (TS) information, COMSEC information excluding controlled cryptographic items when unkeyed and utilized with unclassified keys, restricted data (RD), special access program (SAP) information, or sensitive compartmented information (SCI).
Source(s):
CNSSI 4009-2015 [Superseded] from DoDM 5220.22 Vol. 3