5 papers
Dynamic Attack Surfaces: A Queue of Branching Processes
Ismail Cosandal, Abdullah Y. Etcibasi, C. Emre Koksal +1
Modern attack surfaces are inherently dynamic. Vulnerabilities emerge over time and they remain exposed to exploit until defenders discover and patch them. Artificial intelligence…
When Mean Age Is Not Enough: Distribution-Aware Scheduling for Networked LQR Control
Abdullah Y. Etcibasi, C. Emre Koksal, Eylem Ekici
Age of Information (AoI) has become a central metric for the design of wireless update systems, especially in applications where fresh measurements support tracking, estimation, an…
A Queueing-Theoretic Framework for Dynamic Attack Surfaces: Data-Integrated Risk Analysis and Adaptive Defense
Jihyeon Yun, Abdullah Yasin Etcibasi, Ming Shi +1
We develop a queueing-theoretic framework to model the temporal evolution of cyber-attack surfaces, where the number of active vulnerabilities is represented as the backlog of a qu…
Organizational Security Resource Estimation via Vulnerability Queueing
Abdullah Y. Etcibasi, Zachary Dobos, C. Emre Koksal
We provide an approach that closely estimates an organization's cyber resources directly from vulnerability timestamps, using a non-stationary queueing framework. Traditional attac…
Separation is Optimal for LQR under Intermittent Feedback
Abdullah Y. Etcibasi, C. Emre Koksal, Eylem Ekici
We study finite-horizon linear-quadratic regulation of a scalar linear system with intermittent state feedback under an average communication-rate constraint. In this setting, the…