山东联通斩断诈骗黑手，守护通信安全

Core Viewpoint - The article highlights the successful collaboration between Shandong Unicom and law enforcement in combating telecom network fraud through a targeted operation against illegal VOIP device installations, resulting in the dismantling of multiple criminal groups and the arrest of several suspects. Group 1: Action and Results - In September, Shandong Unicom actively supported police in a special operation named "打猫" (Operation Cat), focusing on illegal VOIP device installations in various locations, achieving significant results [1] - The operation led to the dismantling of multiple criminal gangs and the arrest of dozens of suspects, effectively curbing the high incidence of telecom network fraud [1] Group 2: Nature of the Threat - The illegal VOIP devices can disguise overseas scam calls as local fixed-line calls, significantly increasing the concealment of fraud activities [3] - Criminals remotely control these devices, creating a spatial separation between the perpetrator and the equipment, complicating investigation efforts [3] Group 3: Collaborative Mechanism - The success of the operation is attributed to the established police-enterprise collaboration mechanism, where an anti-fraud task force uses intelligent monitoring systems to detect abnormal numbers and initiate thorough investigations [4] - Precise leads are quickly relayed to law enforcement, aiding in targeted operations against criminal groups [4] Group 4: Preventive Measures - Alongside enforcement actions, Shandong Unicom has enhanced security and early warning measures for key clients, conducting inspections in high-risk areas such as hospitals and office buildings [5] - The company has delivered warning notices to key clients and assisted in improving fixed-line usage registration systems, thereby reducing fraud risks at the source [5] Group 5: Internal Capacity Building - The company places a strong emphasis on internal training, equipping installation and maintenance personnel with skills to identify VOIP devices and common concealment methods [6] - A notable incident involved an engineer who, upon receiving a tip about a VOIP installation, promptly assisted police in apprehending a suspect, demonstrating the effectiveness of the training [6] - The company plans to continue optimizing the police-enterprise collaboration mechanism and strengthen technical defense systems to further combat telecom network fraud [6]