Cyber-Physical Security of the Smart Grid

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The smart grid represents a marriage of information technology with the electricity network. While the increased reliance on cyber infrastructure enables greater reliability, efficiency and capacity of power delivery, this dependence also creates a host of insidious weaknesses. The scale and complexity of the smart grid, along with its increased connectivity and automation, make the task of cyber-physical protection particularly challenging. Smart grid security constitutes a daunting effort for asset owners because of resources limitations. Important questions arise when identifying priorities for design and protection: Which cyber components, if compromised, can lead to significant power delivery disruption? What kinds of grid topologies are inherently robust to classes of cyber attack? Is the additional information available through advanced cyber infrastructure worth the increased security risk?