8 citations · 12 across the 10 of their papers we have counts for
10 papers
Security of Gradient Tracking Algorithms Against Malicious Agents
Sribalaji C. Anand, Alexander J Gallo, Nicola Bastianello
Consensus algorithms are fundamental to multi-agent distributed optimization, and their security under adversarial conditions is an active area of research. While prior works prima…
Switching multiplicative watermark design against covert attacks
Alexander J. Gallo, Sribalaji C. Anand, André M. H. Teixeira +1
Active techniques have been introduced to give better detectability performance for cyber-attack diagnosis in cyber-physical systems (CPS). In this paper, switching multiplicative…
On the Output Redundancy of LTI Systems: A Geometric Approach with Application to Privacy
Guitao Yang, Alexander J. Gallo, Angelo Barboni +3
This paper examines the properties of output-redundant systems, that is, systems possessing a larger number of outputs than inputs, through the lenses of the geometric approach of…
Analysis of extremum seeking control for wind turbine torque controller optimization by aerodynamic and generator power objectives
Sebastiaan P. Mulders, Alex J. Gallo, Mario A. Rotea
Wind turbines degrade over time, resulting in varying structural, aeroelastic, and aerodynamic properties. In contrast, the turbine controller calibrations generally remain constan…
Hybrid Design of Multiplicative Watermarking for Defense Against Malicious Parameter Identification
Jiaxuan Zhang, Alexander J. Gallo, Riccardo M. G. Ferrari
Watermarking is a promising active diagnosis technique for detection of highly sophisticated attacks, but is vulnerable to malicious agents that use eavesdropped data to identify a…
An Economic Model Predictive Control Approach for Load Mitigation on Multiple Tower Locations of Wind Turbines
Zhixin Feng, Alexander J. Gallo, Yichao Liu +3
The current trend in the evolution of wind turbines is to increase their rotor size in order to capture more power. This leads to taller, slender and more flexible towers, which th…
Hierarchical Cyber-Attack Detection in Large-Scale Interconnected Systems
Twan Keijzer, Alexander J. Gallo, Riccardo M. G. Ferrari
In this paper we present a hierarchical scheme to detect cyber-attacks in a hierarchical control architecture for large-scale interconnected systems (LSS). We consider the LSS as a…
Cryptographic switching functions for multiplicative watermarking in cyber-physical systems
Alexander J. Gallo, Riccardo M. G. Ferrari
In this paper we present a novel switching function for multiplicative watermarking systems. The switching function is based on the algebraic structure of elliptic curves over fini…
Design of multiplicative watermarking against covert attacks
Alexander J. Gallo, Sribalaji C. Anand, André M. H. Teixeira +1
This paper addresses the design of an active cyberattack detection architecture based on multiplicative watermarking, allowing for detection of covert attacks. We propose an optima…
Distributed watermarking for secure control of microgrids under replay attacks
Alexander J. Gallo, Mustafa S. Turan, Francesca Boem +2
The problem of replay attacks in the communication network between Distributed Generation Units (DGUs) of a DC microgrid is examined. The DGUs are regulated through a hierarchical…