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  • 1.
    Munodawafa, Fortune
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering.
    Emerging Security Risks within Hybrid Datacenter Infrastructure : A Risk Assesment2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Datacenters are critical infrastructures in today’s information society, they have undergone significant transformation from their inception days within their underlying technological infrastructure. They are at the core of the cloud computing revolution which is changing business models on how organizations deal with their spending on IT infrastructure.Virtualization has been the disruptive force driving this transformation within the datacenter space and has enhancing efficiencies in terms of server load consolidation, resource provisioning,flexibility, and scalability, lower spend on buying equipment and improved power utilization efficiency. The transition phase has led to modern datacenters incorporating both the legacy traditional datacenter infrastructure with the latest ones that are based on fully virtualized solutions. Though this mix of infrastructures has improved resource utilization and consolidation,the flexibility and scalability aspect that they bring about ushers in new set of emerging security challenges to the modern datacenter.The contents of this research work present a comprehensive Risk Assessment to a set of recentlyidentified security risks extracted from the NIST vulnerability database, these risks are related tothe flexibility and scalability aspect of modern datacenters. The findings of this study show thatvirtualization techniques introduce a set of new security flaws at the Hypervisor level, SDN Controllers and Virtual network layers thus further exacerbating challenges in ServiceAvailability, Confidentiality and Data Integrity in modern datacenters. An EBIOS approach to risk assessment was utilized as the guiding methodology. Security recommendations according to security best practices were then proposed as remedial mitigation measures. Ascertaining risk is crucial component for decision makers and the findings of this thesis research work contribute to that by providing better insight to the emerging security risks in a hybrid infrastructure context. The noted findings have implications to security design considerations for prospective datacenter providers who intend to deploy modern hybrid datacenter infrastructure or those in the process of transition.

  • 2.
    Munodawafa, Fortune
    et al.
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science.
    Awad, Ali Ismail
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science. Faculty of Engineering, Al-Azhar University, Qena, Egypt.
    Security risk assessment within hybrid data centers: a case study of delay sensitive applications2018In: Journal of Information Security and Applications, ISSN 2214-2134, E-ISSN 2214-2126, Vol. 43, p. 61-72Article in journal (Refereed)
    Abstract [en]

    Data centers are considered a critical form of infrastructure in today’s information society. They are at the core of the cloud computing and services revolution, which has changed the business models on how organizations deal with IT infrastructure costs. The hybrid data center architecture incorporates both legacy and fully virtualized infrastructures. On the one hand, the composite infrastructure has improved resource utilization and consolidation by adding flexibility and scalability factors, making the data center more cost effective and more agile. On the other hand, the hybrid infrastructure has imposed a new set of security challenges that need to be brought into focus. The lack of resource availability can be a great risk for delay sensitive applications such as voice over IP (VoIP) and online gaming when cloud computing is the deployment model. This study addresses the emerging risk problem by conducting a comprehensive security risk assessment using the NIST national vulnerability database (NVD) combined with EBIOS risk analysis and evaluation methodology. This study focuses on resource availability problem emanating from delay variations and queuing mechanisms in virtualized systems and its impact on delay sensitive applications. The study argues for the existence of availability risk within the hybrid data center infrastructure, which can deteriorate the performance of delay sensitive applications. Security remedial and countermeasures to the identified security risks are suggested in an extended discussion at the end of the study.

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