Signalling Storms and Security: Can Firewalls and Standard Routers Fully Protect 5G Core Network Security?
5G core networks introduce cloud‑native architecture, service‑based interfaces and massive connection capabilities, bringing great flexibility for telecom operators. Meanwhile, they also expose new threat surfaces that did not exist in legacy mobile networks. Among these risks, signalling storms stand out as one of the most destructive security threats. Malicious devices, abnormal terminal behaviours or misconfigured third‑party systems may generate massive bursts of signalling messages, overwhelming core network control plane resources and causing service degradation or even partial network outages.
