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protected distribution system (PDS)

Abbreviation(s) and Synonym(s):

PDS

Definition(s):

  Wire line or fiber optic system that includes adequate safeguards and/or countermeasures (e.g., acoustic, electric, electromagnetic, and physical) to permit its use for the transmission of unencrypted information through an area of lesser classification or control.
Source(s):
CNSSI 4009-2015 CNSSAM TEMPEST/01-13, NSA/CSS Policy 3-12