Exploring the Efficacy of Multi-Agent Reinforcement Learning for Autonomous Cyber Defence: A CAGE Challenge 4 Perspective. - Mitchell Kiely; Metin Ahiskali; Etienne Borde; Benjamin Bowman; David Bowman; Dirk Van Bruggen; KC Cowan; Prithviraj Dasgupta; Erich Devendorf; Ben Edwards; Alex Fitts; Sunny Fugate; et al. (AAAI, 2025)