A Network Service-Based Risk Assessment Model a Case Study on an Educational Organizations
Keywords:
Risk Assessment, Vulnerability Management, Information Security, Business Continuity, Borda Count.Abstract
This paper addresses risk assessment in organizations lacking
benchmarking and risk assessment references. We started with a strategic
conceptualization of information technology services that an organization
depends on, these services were seen as network services that are redistributed
into basic service elements; these service elements are expressed in terms of
hosts running these services and their interconnections. Eventually; we were
able to express strategic services’ vulnerabilities in terms of host vulnerabilities.
Closing this gap led us to construct a risk reference for the organizational
strategic services. Using relevant information about these vulnerabilities we
were able to introduce a risk probability model, a risk impact model and a risk
weighting approach using Borda Count. We followed a step-by-step approach
to build the risk with a holistic view. We implemented the suggested model on
Al-Quds Open University’s (QOU) IT infrastructure as a case study and we
were able to derive the strategic services’ risks and the overall organizational
IT risk.
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