Analysis and application of SS7 core network threat detection

Signaling System No.7 (SS7) Network was designed with a focus on reliability and efficiency, with a high degree of trust between communication entities and no encryption or defense against attacks. With the development of the network, the vulnerability of SS7 network is increasingly exposed. This paper comprehensively analyzed the security threats existing in SS7 network, and extracted the characteristics of the threats such as location tracking, interception of calls and interception of SMS. On the basis of feature extraction, threat modeling is carried out to extract threat detection rules, and the threat detection model is applied to the experimental network.