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This paper discusses malicious false data injection attacks on the wide area measurement and monitoring system in smart grids. First, methods of constructing sparse stealth attacks are developed for two typical scenarios: 1) random attacks in which arbitrary measurements can be compromised; and 2) targeted attacks in which specified state variables are modified. It is already demonstrated that stealth...
Malicious data injection attacks against smart grid systems are one of the most significant problems in cyber security. Previously, these are either targeted attacks or attacks with restrictions. In this paper, optimal random undetectable attacks are considered for the first time. In the state of the art, stealth attacks can always exist if the number of compromised measurements exceeds a certain...
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