山东联通联合公安机关成功打击多起医院VOIP盗接案件

Core Viewpoint - Shandong Unicom has successfully cracked down on multiple cases of illegal tapping of hospital landline lines, ensuring user communication safety through a coordinated effort with the Ministry of Industry and Information Technology and local police [1][3]. Group 1: Police-Enterprise Collaboration - Shandong Unicom detected abnormal high-frequency calls on hospital landline lines and confirmed non-normal usage through source analysis [3]. - Criminals disguised as maintenance personnel or exploited security vulnerabilities to illegally connect landline lines to VOIP gateway devices, enabling overseas scam groups to make remote calls [3]. - After gathering sufficient evidence, Shandong Unicom collaborated with police to form a special task force, successfully dismantling multiple criminal gangs and arresting nearly 20 suspects, while seizing several VOIP gateways and other tools [3]. Group 2: Technical Empowerment - To enhance source governance, Shandong Unicom's technical team optimized the VOIP abnormal call monitoring model, focusing on high-risk scenarios such as hospitals and office buildings [3]. - New features were added to improve identification accuracy, including "sudden short-term high frequency" and "test call behavior" [3]. - A three-tier monitoring and response mechanism was established during high incidence periods, significantly reducing the average response time to abnormal calls [3]. Group 3: Future Actions - Shandong Unicom plans to continue deepening the "cat-catching" action by building a three-in-one protection network through technical countermeasures, industry collaboration, and public awareness [5].