Interdependency
The terms interdependency and dependency are often used in the CIP literature as synonymous. See also dependency.
One of the most cited definitions of interdependency is the one by Rinaldi et al. who define interdependency as a
Definitions
European Definitions
EU
This definition is adopted on the Commission's staff working document on a new approach to the EPCIP [2]:
The working document also highlights that threats to a single Critical Infrastructure can have "a very significant impact on a broad range of actors in different infrastructures and more widely". The document also highlight the cross-border effect of interdependencies, spanning a number of European countries. The example identified in the document is the European high-voltage electricity grid, composed of the interconnected national high-voltage electricity grids.
European Project Definitions
CIPRNet project
The CIPRNet project [3] uses the following definition:
National Definitions
Australia
New South Wales
Brazil
Interdependence: dependency relationship or interference of a critical infrastructure with another, or of a Critical Infrastructure priority area with another.
Germany
An older definition was:
Ireland
Dependency and Interdependency can be defined as relationships which consider the cascading effect within sector/sub-sectors and/or across sectors/sub-sectors
Italy
Republic of Trinidad & Tobago
The degree of interdependence does not need to be equal in both directions.
Spain
United States
The degree of interdependency does not need to be equal in both directions. For example, the Energy Sector depends on a functioning Water Sector for successful day-to-day operations, just as the Water Sector needs energy to effectively manage water and wastewater systems [15]
Discussion
Empirical analysis of Critical infrastructure incidents and events by Van Eeten et al. [16], and again by Luiijf and Klaver (2021) [17] shows that interdependencies (= the mutual Dependency) hardly occur; and when they occur the effect is at a lower (weaker) dependency level.
See also
Notes
References
- Jump up ↑ Steven M. Rinaldi, James P. Peerenboom, Terrence K. Kelly, Identifying, Understanding and Analysing Critical Infrastructure Interdependencies, IEEE Control Systems Magazine, December 2001, p.14.
- Jump up ↑ Staff Working Document on a new approach to the European Programme for Critical Infrastructure Protection - Making European Critical Infrastructures more secure, SWD(2013) 318 final, Brussels, 28.8.2013
- Jump up ↑ http://www.ciprnet.eu/
- Jump up ↑ Glossary of the Government of Queensland
- Jump up ↑ NSW Critical Infrastructure Resilience Strategy Partner, Prepare, Provide (2018)
- Jump up ↑ GUIA DE REFERÊNCIA PARA A SEGURANÇA DAS INFRAESTRUTURAS CRÍTICAS DA INFORMAÇÃO Versão 01 (Nov. 2010).
- Jump up ↑ Protection of Critical Infrastructures – Baseline Protection Concept: Recommendation for Companies, BMI.
- Jump up ↑ UP KRITIS, BSI, 2014
- Jump up ↑ Strategic Emergency Management 2019
- Jump up ↑ PROTEZIONE DELLE INFRASTRUTTURE CRITICHE INFORMATIZZATE La realtà Italiana (2004)
- Jump up ↑ Comprehensive Disaster Management Policy Framework for Trinidad and Tobago
- Jump up ↑ 7630 Ley 8/2011, de 28 de abril, por la que se establecen medidas para la protección de las infraestructuras críticas.
- Jump up ↑ NIPP Directive (DHS Lexicon, 2010)
- Jump up ↑ DHS Risk Lexicon 2010 Edition, September 2010
- Jump up ↑ Critical Infrastructure Protection and Resilience Toolkit (Glossary), US Department of Homeland Security
- Jump up ↑ THE STATE AND THE THREAT OF CASCADING FAILURE ACROSS CRITICAL INFRASTRUCTURES: THE IMPLICATIONS OF EMPIRICAL EVIDENCE FROM MEDIA INCIDENT REPORTS, MICHEL VAN EETEN,ALBERT NIEUWENHUIJS,ERIC LUIIJF,MARIEKE KLAVER,EDITE CRUZ (2011)
- Jump up ↑ Analysis and lessons identified on critical infrastructures and dependencies from an empirical data set, Luiijf and Klaver, 2021