An In-Depth Analysis of Cybersecurity Risks, Threat Propagation, and Systemic Vulnerabilities in Highly Interconnected Digital Ecosystems

Important services are now based on highly interconnected digital ecosystems that have a weak cybersecurity stance because of hidden dependencies, fast propagation of threats, and slow detection across cyber physical boundaries. Traditional security testing, where the threat is evaluated separately or in the state of rest, is not particularly good at justifying how small scaled attacks frequently turn into massive functional breakdowns. The deficiency here is due to the fact that the existing risk models have mostly ignored interdependency and temporal dynamics which often promote the spread and amplification of attacks when spread across a heterogeneous system. To counter this weakness, this chapter presents a framework of systemic, propagation-aware cyberspace security analysis, based on the ecosystem-level modeling, dependency-weighted risk measurement, dynamic threat diffusion, and resilience measurement in a single approach. The suggested strategy has a well-defined connection between structural position, dependency strength, and time of response to emergent risk.