Case Study: a major UK mobile operator strengthens 5G resilience with Fox-IT security testing

Major UK Mobile Operator strengthens 5G resilience with Fox-IT

A major UK mobile operator sought to expand its 5G standalone network to deliver higher performance but recognized that the shift to a software-defined, cloud-native architecture introduced a broader and more complex attack surface. Their challenge involved securing new risks across cloud platforms, APIs, virtualisation, OpenRAN ecosystems, and supply chains. The operator engaged Fox-IT to conduct a specialist 5G-focused security testing programme to address these concerns.

Fox-IT delivered a comprehensive security testing programme covering the 5G core, Kubernetes and containers, NFVI, OpenRAN, and edge infrastructure. This solution provided the operator with end-to-end risk visibility and resulted in a hardened cloud-native environment, reduced API exposure, improved identity controls, and stronger segmentation. Fox-IT's work significantly reduced the likelihood of a systemic 5G compromise, mitigating the potential for nationwide service disruption and securing critical infrastructure services that rely on the network.