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  • 1.
    Korman, Matus
    et al.
    KTH, School of Electrical Engineering (EES), Network and Systems engineering.
    Välja, Margus
    KTH, School of Electrical Engineering (EES), Network and Systems engineering.
    Björkman, Gunnar
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Ekstedt, Mathias
    KTH, School of Electrical Engineering (EES), Network and Systems engineering.
    Vernotte, Alexandre
    KTH, School of Electrical Engineering (EES), Network and Systems engineering.
    Lagerström, Robert
    KTH, School of Electrical Engineering (EES), Network and Systems engineering.
    Analyzing the effectiveness of attack countermeasures in a SCADA system2017In: Proceedings - 2017 2nd Workshop on Cyber-Physical Security and Resilience in Smart Grids, CPSR-SG 2017 (part of CPS Week), Association for Computing Machinery, Inc , 2017, p. 73-78Conference paper (Refereed)
    Abstract [en]

    The SCADA infrastructure is a key component for power grid operations. Securing the SCADA infrastructure against cyber intrusions is thus vital for a well-functioning power grid. However, the task remains a particular challenge, not the least since not all available security mechanisms are easily deployable in these reliability-critical and complex, multi-vendor environments that host modern systems alongside legacy ones, to support a range of sensitive power grid operations. This paper examines how effective a few countermeasures are likely to be in SCADA environments, including those that are commonly considered out of bounds. The results show that granular network segmentation is a particularly effective countermeasure, followed by frequent patching of systems (which is unfortunately still difficult to date). The results also show that the enforcement of a password policy and restrictive network configuration including whitelisting of devices contributes to increased security, though best in combination with granular network segmentation.

  • 2. Rossebo, Judith E. Y.
    et al.
    Wolthuis, Reinder
    Fransen, Frank
    Björkman, Gunnar
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Medeiros, Nuno
    An Enhanced Risk-Assessment Methodology for Smart Grids2017In: Computer, ISSN 0018-9162, E-ISSN 1558-0814, Vol. 50, no 4, p. 62-71Article in journal (Refereed)
    Abstract [en]

    Cyberattacks on power grids are pushing threat and risk assessment to another complexity level. As part of its scope, the EU's Security for Smart Electricity Grids (SEGRID) project was tasked with building on existing methods to address the interdependencies characteristic of a smart grid. The authors describe the resulting methodology.

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