Any mobile operator’s networks contain vulnerabilities inherited from obsolete technologies. The report reveals the security level of mobile carriers based on data gathered during the investigation of real-life networks.LanguageRussianSergey Puzankov Being an expert at Positive Technologies, he is engaged in the research of attacks against mobile operators’ networks, as well as the development of SS7 Scanner and SS7 Attack Discovery. The author of several publications on SS7 security.