Visible to the public Hidden Moving Target Defense in Smart Grids

TitleHidden Moving Target Defense in Smart Grids
Publication TypeConference Paper
Year of Publication2017
AuthorsTian, Jue, Tan, Rui, Guan, Xiaohong, Liu, Ting
Conference NameProceedings of the 2Nd Workshop on Cyber-Physical Security and Resilience in Smart Grids
PublisherACM
Conference LocationNew York, NY, USA
ISBN Number978-1-4503-4978-9
KeywordsCPS Resilience, false data injection attack, moving target defense, pubcrawl, resilience, Resiliency, Smart grid, state estimation
AbstractRecent research has proposed a moving target defense (MTD) approach that actively changes transmission line susceptance to preclude stealthy false data injection (FDI) attacks against the state estimation of a smart grid. However, existing studies were often conducted under a less adversarial setting, in that they ignore the possibility that an alert attacker can also try to detect the activation of MTD and then cancel any FDI attack until they learn the new system configuration after MTD. Indeed, in this paper, we show that this can be achieved easily by the attacker. To improve the stealthiness of MTD against the attacker, we propose a hidden MTD approach that maintains the power flows of the whole grid after MTD. We develop an algorithm to construct the hidden MTD and analyze its feasibility condition when only a subset of transmission lines can adjust susceptance. Simulations are conducted to demonstrate the effectiveness of the hidden MTD against alert attackers under realistic settings.
URLhttp://doi.acm.org/10.1145/3055386.3055388
DOI10.1145/3055386.3055388
Citation Keytian_hidden_2017