Enhancing Network Slice Security with Deep Reinforcement Learning and Moving Target Defense Strategies

Network slicing is revolutionizing how networks are built and managed by enabling the flexible and efficient allocation of resources to meet diverse application requirements. Yet this flexibility introduces significant security challenges that must be addressed to maintain system integrity and performance. Therefore, this article presents a novel framework integrating Deep Reinforcement Learning (DRL) with Moving Target Defense (MTD) strategies to create a dynamic, multi-layered security system. By modelling the problem as a Markov Decision Process (MDP), the proposed framework leverages advanced DRL algorithms to learn optimal policies for deploying MTD mechanisms across network slices by continuously adapting defences to counter evolving cyber threats. Simulations demonstrate that this integrated approach mitigates a broad spectrum of cyber-attacks while maintaining high network performance, highlighting its potential for securing next-generation networks and offering valuable insights for future research and real-world implementation.