3 papers
math.OC2026
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…
cs.CR2026
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…
cs.CR2026
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…