Undetectable Timing-Attack on Linear State-Estimation by Using Rank-1 Approximation

Sergio Barreto, Marco Pignati, Gyorgy Dan, Jean-Yves Le Boudec, Mario Paolone
2018 IEEE Transactions on Smart Grid  
Smart-grid applications based on synchrophasor measurements have recently been shown to be vulnerable to timing attacks. A fundamental question is whether timing attacks could remain undetected by bad-data detection algorithms used in conjunction with state-of-the-art situational-awareness state estimators. In this paper, we analyze the detectability of timing attacks on linear state-estimation. We show that it is possible to forge delay attacks that are undetectable. We give a closed form for
more » ... a closed form for an undetectable attack; it imposes two phase offsets to two or more synchrophasor-based measurement units that can be translated to synchrophasors' time delays. We also propose different methods for combining two-delays attacks to produce a larger impact. We simulate the attacks on a benchmark powertransmission grid, we show that they are successful and can lead to physical grid damage. To prove undetectability, we use classic bad-data detection techniques such as the largest normalized residual and the χ 2 -test.
doi:10.1109/tsg.2016.2634124 fatcat:dwczc4dq3vasxi7xvzuamm7uqq