Physical System Consequences of Unobservable State-and-Topology Cyber-Physical Attacks

Jiazi Zhang, Lalitha Sankar

Research output: Contribution to journalArticlepeer-review

102 Scopus citations


This paper studies the physical consequences of a class of unobservable state-and-topology cyber-physical attacks in which both state and topology data for a sub-network of the network are changed by an attacker to mask a physical attack. The problem is formulated as a two-stage optimization problem, which aims to cause overload in a line of the network with limited attack resources. It is shown that unobservable state-and-topology cyber-physical attacks as studied in this paper can make the system operation more vulnerable to line outages and failures.

Original languageEnglish (US)
Article number7450168
Pages (from-to)2016-2025
Number of pages10
JournalIEEE Transactions on Smart Grid
Issue number4
StatePublished - Jul 2016


  • Cyber-physical system
  • false data injection attack
  • state estimation
  • topology
  • two-stage optimization

ASJC Scopus subject areas

  • General Computer Science


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