Department of Defense, "Information Assurance (IA)" (DoD Directive 8500.01e) (Oct. 24, 2002; certified Current as of Apr. 23, 2007) (full-text).
Overview[]
This Directive and DoD Instruction 8500.2 establish policy and assigns responsibilities to achieve Department of Defense (DoD) information assurance (IA) through a defense-in-depth approach that integrates the capabilities of personnel, operations, and technology, and supports the evolution to network-centric warfare.