5G Network Architecture and Security Challenges
Summary
The fifth generation (5G) of mobile networks introduces a service-based architecture in which network functions are virtualised, decoupled from hardware and orchestrated via software-defined control. Key enablers such as software-defined networking, network function virtualisation, multi-access edge computing and network slicing permit scalable, low-latency connectivity for enhanced mobile broadband, ultra-reliable low-latency communication and massive machine-type communications. While this flexibility supports a wide range of use cases—from autonomous vehicles and Industry 4.0 to remote healthcare and smart cities—it also expands the attack surface. Virtualised functions may be exposed to orchestration-level misconfigurations, container escapes or lateral movement within micro-services. Edge nodes introduce new ingress points that must be hardened against denial of service, data tampering and privacy breaches. Dynamic slice instantiation requires robust isolation and unified policy enforcement to prevent cross-slice eavesdropping or resource exhaustion. Emerging challenges include securing supply chains for virtual network functions, integrating zero-trust principles into roaming and inter-operator frameworks, and mitigating adversarial machine-learning threats within intelligent orchestration. Addressing these issues is critical for operators and regulators to realise 5G’s promise of ubiquitous, trustworthy connectivity on a global scale.
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5G Network Architecture and Security Challenges publication trend
The graph below shows the total number of articles in 5g network architecture and security challenges across all publications each year (not limited to Nature Index journals).
Technical terms
Network slicing: Partitioning of physical infrastructure into multiple logical networks, each tailored to specific performance and security requirements.
Software-Defined Networking (SDN): Separation of control and data planes to enable centralised network management via programmable controllers.
Network Function Virtualisation (NFV): Deployment of network functions as software instances on commodity servers rather than dedicated appliances.
Multi-Access Edge Computing (MEC): Placement of compute and storage resources at the network edge to reduce latency and support localised services.
Zero-Trust Security: Security paradigm that requires continuous authentication and authorisation of all network entities, regardless of location.
References
- Security Orchestration in 5G and Beyond Smart Network Technologies. IEEE Open Journal of the Computer Society (2025).
- Machine Learning Threatens 5G Security. IEEE Access (2020).
- Verticals in 5G MEC-Use Cases and Security Challenges. IEEE Access (2021).
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