An AI Security Testbed for the 5G Core

The 5G core network is the backbone of modern mobile communication, providing high-speed, low-latency, and diverse services for users and industries. Artificial Intelligence (AI) plays an important role in this network by optimizing per-formance, supporting dynamic resource scaling, and improving security through anomaly detection and threat mitigation. Testing AI in 5G environments is difficult because of the complexity of the network and the many possible attack vectors. In this paper, we present a modular and reproducible testbed for evaluating AI-based security mechanisms in the 5G core. The testbed emulates key 5G components and traffic patterns, enabling systematic experiments under realistic conditions. It also provides reliable measurements of Key Performance Indicators (KPIs) to evaluate the effectiveness, robustness, and operational impact of AI solutions, including their ability to detect and mitigate threats. Our work provides a structured framework for testing AI solutions and supports the development of secure, resilient, and AI -enhanced 5G networks.