China unicom combats telecom fraud with AI model

In September 2026, China Unicom Fushun Branch, using its group's anti-fraud large model system, uncovered and dismantled a hidden VOIP fraud site in collaboration with local police. The incident began in August 2026, when the system flagged a suspicious telecom fraud risk. Staff conducted an on-site inspection, discovering illegally installed VOIP devices. A suspect attempted to flee but was apprehended by police after staff provided detailed information. Police confirmed the suspect's involvement in telecom fraud. VOIP devices, known as 'black boxes,' disguise foreign fraud calls as domestic numbers, increasing fraud success rates. Criminals now use tactics like 'free broadband maintenance' to install these devices, targeting the elderly. Authorities urge vigilance against free service claims and immediate reporting of suspicious devices to combat telecom fraud. Operators and police warn the public to verify identities and report unknown devices. The case highlights the effectiveness of AI in detecting and disrupting fraud networks.