ABSTRACT
The concept of cyber key terrain has emerged as a critical yet poorly defined element of military cyberspace operations. While the traditional military concept of key terrain translates well to the physical infrastructure of cyberspace, its application to virtual layers remains problematic. This paper identifies and analyses what we could call as the “cyber key terrain paradox”: the concept demonstrates clear tactical utility when applied to physical network elements, but loses coherence and applicability at operational and strategic levels, where logical networks, cyber-persona dimensions, and cognitive layers become dominant. NATO’s current promulgated doctrine, AJP-3.20 Edition A Version 1 (2020), adopts a three-layer model of cyberspace (physical, logical, and cyber-persona), while academic and doctrinal proposals have progressively expanded this to five, seven, and eight layers encompassing cognitive and social dimensions.
This proliferation of models intensifies rather than resolves the paradox, as no existing framework provides systematic terrain identification methodologies for the higher layers. Through systematic analysis of military doctrine and academic literature, this study reveals fundamental inconsistencies between narrow, physical-centric definitions of cyber key terrain and the broader, multi-layered character of cyberspace as a domain of conflict. The paper proposes a reconciliation framework comprising layer-specific adaptive definitions, a temporal classification system, and a structured identification methodology, preserving the concept’s tactical utility while providing the doctrinal coherence that operational and strategic planning requires.
