Department of Defense
INSTRUCTION
NUMBER 5200.44
November 5, 2012
Incorporating Change 1, Effective August 25, 2016
DoD CIO/USD(AT&L)
SUBJECT: Protection of Mission Critical Functions to Achieve Trusted Systems and Networks
(TSN)
References: See Enclosure 1
1. PURPOSE. This Instruction, in accordance with the authorities in DoD Directive (DoDD)
5134.01 (Reference (a)) and DoDD 5144.102 (Reference (b)):
a. Establishes policy and assigns responsibilities to minimize the risk that DoD’s warfighting
mission capability will be impaired due to vulnerabilities in system design or sabotage or
subversion of a system’s mission critical functions or critical components, as defined in this
Instruction, by foreign intelligence, terrorists, or other hostile elements.
b. Implements the DoD’s TSN strategy, described in the Report on Trusted Defense Systems
(Reference (c)) as the Strategy for Systems Assurance and Trustworthiness, through Program
Protection and information assurance (IA) cybersecurity implementation to provide
uncompromised weapons and information systems. The TSN strategy integrates robust systems
engineering, supply chain risk management (SCRM), security, counterintelligence, intelligence,
information assurance cybersecurity, hardware and software assurance, and information systems
security engineering disciplines to manage risks to system integrity and trust.
c. Incorporates and cancels Directive-Type Memorandum 09-016 (Reference (d)).
d. Directs actions in accordance with the SCRM implementation strategy of National
Security Presidential Directive 54/Homeland Security Presidential Directive 23 (Reference (e)),
section 806 of Public Law 111-383 (Reference (f)), DoD Instruction (DoDI) 5200.39 (Reference
(g)), DoDD 5000.01 (Reference (hg)), DoDI 5000.02 (Reference (ih)), DoDD DoDI 8500.01E01
(Reference (ji)), and Committee on National Security Systems Directive (CNSSD) No. 505
(Reference (kj)), and National Institute for Science and Technology Special Publication 800-161
(Reference (k)).
2. APPLICABILITY. This Instruction applies to:
