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Police in South Korea Report Crackdowns on Illegal Gambling and Phishing Rings

South Korean police referred over 100 people to prosecutors over a Vietnam-based illegal gambling site, reported a sharp drop in voice phishing cases, and busted a China-linked phishing ring with Chinese police.

In a separate development, the Korean National Police Agency (KNPA) reported a sharp decline in scam cases. Between January and July, 7,940 voice phishing cases were reported, down 46 percent from the same period last year, with financial losses totaling 361.4 billion won (US$261 million), down 53 percent. The KNPA attributed the decline to preventive measures, including an AI-based analysis of mobile phone numbers used in phishing scams in collaboration with three major mobile carriers, which led to the suspension of numbers showing similar patterns. New scam cases, often involving fraudulent stock investment, also fell 41 percent in July to 2,275, with losses shrinking 40 percent to 62.1 billion won. In July alone, police sent emergency alerts to 127,026 people at risk, compared with just 767 in February. "The fact damage is declining means the preemptive measures that have been taken are delivering results," said Hong Suk-ki, head of the National Office of Investigation.

Police also announced the apprehension of six South Korean and four Chinese nationals suspected of running a China-based phishing ring, in a joint operation with Chinese authorities. According to the Gangwon Provincial Police Agency, the suspects defrauded approximately 10 billion won (US$7.23 million) from 118 South Koreans, mainly those in their 60s and older, between January 2025 and March of this year. The South Korean suspects have been repatriated and referred to prosecution. The group allegedly lured victims by claiming a check card had been issued in their name, then installing malicious apps to intercept calls when victims tried to verify or call the police. They operated voice phishing call centers in China, posing as card delivery drivers, card company security staff, police officers, Financial Supervisory Service officials and prosecutors. The crackdown was conducted under a joint investigation by Gangwon police and China's Jilin Provincial Public Security Department. Key evidence, including mobile phones, has been brought to South Korea to help secure evidence that criminal proceeds were shared in cryptocurrency. "We will further strengthen practical cooperation with overseas investigative agencies to take the lead in eradicating phishing crimes," said Choi Hyeon-suk, head of the Gangwon police.