11 papers · 1 filter
Katz Centrality-Based Security Allocation in Positive Networks
Anh Tung Nguyen, Sribalaji C. Anand, André M. H. Teixeira
This paper deals with security allocation challenges for networked control systems represented by positive-weighted digraphs under stealthy false data injection attacks. These syst…
Divergence-based Safety Measure for Large Language Models via Rational Inattention
Anh Tung Nguyen, Quanyan Zhu
This paper proposes a divergence-based safety measure for large language models (LLMs) under embedding-input attacks. The proposed measure quantifies the worst-case Kullback--Leibl…
Detection-Control Games under Hidden Modes: Resilience-Induced Blindness Phenomenon
Anh Tung Nguyen, Quanyan Zhu
This paper studies resilient control for cyber-physical systems operating under hidden degraded or compromised modes. We formulate hidden-mode detection and belief-dependent contro…
Attack Detection using Time Series Foundation Models
Sribalaji C. Anand, Anh Tung Nguyen, George J. Pappas
This paper addresses the problem of attack detection in cyber-physical systems without any knowledge of the plant model or its structure. A remotely located plant transmits sensor…
Centrality-Based Security Allocation in Networked Control Systems
Anh Tung Nguyen, Andreas Hertzberg, André MH Teixeira
This paper addresses the security allocation problem within networked control systems, which consist of multiple interconnected control systems under the influence of two opposing…
Quantifying Security for Networked Control Systems: A Review
Sribalaji C. Anand, Anh Tung Nguyen, André M. H. Teixeira +2
Networked Control Systems (NCSs) are integral in critical infrastructures such as power grids, transportation networks, and production systems. Ensuring the resilient operation of…
Fundamental limitations of sensitivity metrics for anomaly impact analysis in LTI systems
Jingwei Dong, Kangkang Zhang, Anh Tung Nguyen +1
This study establishes a connection between the output-to-output gain (OOG), a sensitivity metric quantifying the impact of stealthy attacks, and a novel input-to-input gain (IIG)…
Security Metrics for Uncertain Interconnected Systems under Stealthy Data Injection Attacks
Anh Tung Nguyen, Sribalaji C. Anand, André M. H. Teixeira
This paper quantifies the security of uncertain interconnected systems under stealthy data injection attacks. In particular, we consider a large-scale system composed of a certain…
Bilateral Cognitive Security Games in Networked Control Systems under Stealthy Injection Attacks
Anh Tung Nguyen, Quanyan Zhu, André Teixeira
This paper studies a strategic security problem in networked control systems under stealthy false data injection attacks. The security problem is modeled as a bilateral cognitive s…
Scalable and Optimal Security Allocation in Networks against Stealthy Injection Attacks
Anh Tung Nguyen, Sribalaji C. Anand, André M. H. Teixeira
This paper addresses the security allocation problem in a networked control system under stealthy injection attacks. The networked system is comprised of interconnected subsystems…
Secure Filtering against Spatio-Temporal False Data Attacks under Asynchronous Sampling
Zishuo Li, Anh Tung Nguyen, André M. H. Teixeira +2
This paper addresses the secure state estimation problem for continuous linear time-invariant systems with non-periodic and asynchronous sampled measurements, where the sensors nee…