South Korea: $17 billion illegal casino network dismantled
South Korean police have dismantled a vast illegal gambling network that allegedly handled $17.2 billion in wagers across 188 online casino websites. The operation, announced on October 19, 2026, led to the arrest of 77 people.
Financial investigation reveals the scale of the illegal network
It all began in November 2025, when South Korean police arrested several operators of illegal gambling websites. By gradually tracing financial transactions and connections between the suspects, investigators uncovered a much larger organisation. Behind the websites accessible to players were several groups specialising in casino content provision, platform development and commercial operations.
The investigation, conducted by the Chungnam Provincial Police, revealed an organisation whose activities extended beyond South Korea’s borders. Its members allegedly operated from offices in Vietnam and Cambodia.
On October 19, 2026, authorities announced the arrest of 77 people, 21 of whom were taken into custody. The suspects included service providers, illegal casino operators and gamblers. In terms of scale, the case represents the largest crackdown on an illegal gambling network ever carried out in South Korea.
Online casinos created in just ten minutes
One of the most striking discoveries of the investigation concerned the technology used by the suspects.
According to police, the network had recruited former software developers who had worked for major South Korean companies. These specialists allegedly designed a program capable of creating a fully functional online casino website in approximately ten minutes.
Rather than developing each casino separately, members of the network could use their software to rapidly generate ready-to-use websites and distribute them to different operators. Between March 2023 and July 2026, the organisation allegedly created and supplied 188 illegal casino websites.
According to investigators, the organisation’s leaders had signed contracts with legitimate foreign companies operating in the gambling industry. These agreements allowed them to obtain live casino video feeds and virtual gaming credits. These resources were then passed on to developers, who integrated them into websites intended for illegal operators.
A business model based on monthly fees
Creating the websites was only one part of the network’s alleged activities. Those in charge reportedly established a recurring revenue model based on fees charged to operators.
Each casino website generated a monthly maintenance fee of approximately 3 million won, or around $2,250. This arrangement allowed developers to receive recurring income without necessarily managing the daily operations of each website themselves.
To attract players, operators relied in particular on the owners of adult-only internet cafés in South Korea. These intermediaries helped recruit customers, while operators generated revenue by selling credits that allowed players to participate in gambling activities.
Police estimate that the organisation operated for just over three years, between March 2023 and July 2026.
$17.2 billion: what does this figure actually represent?
According to estimates from South Korean authorities, players wagered a total of 23 trillion won, equivalent to approximately $17.2 billion, across the network’s various platforms.
Investigators estimate that the two main supplier groups generated around 150 billion won in alleged criminal proceeds, equivalent to approximately $112 million. Casino content providers reportedly received 120 billion won, while website developers earned approximately 30 billion won.
An organisation operating across three countries
The suspects allegedly worked from offices in South Korea, Vietnam and Cambodia. According to police, they frequently moved their operations between the Korean Peninsula and Southeast Asia.
These relocations reportedly complicated investigators’ efforts to identify network members and trace their activities. The organisation also used servers located overseas, a method that allegedly made its IT infrastructure more difficult to detect.
Nevertheless, investigators managed to establish connections between the various participants by examining their financial transactions and communications.
Contracts signed with foreign gambling companies also helped investigators understand how the alleged organisers obtained the content integrated into the illegal platforms.
Investigators examined 795 bank accounts
To identify the suspected key figures behind the operation, police examined financial transactions associated with 795 bank accounts. Analysing these transactions allowed investigators to explore the financial relationships between the different participants in the network.
Investigators also reviewed messages exchanged through foreign communication services.
These investigations helped reconstruct the organisation’s structure and identify individuals involved at different levels of its operations.
Of the 77 people arrested, 25 were allegedly involved in providing services required by the casinos, while 33 reportedly participated in operating the websites. The remaining 19 individuals were identified as gamblers. In addition, 24 people associated with website development are facing charges related to organised crime.
Despite the 77 announced arrests, the investigation is not yet complete. South Korean authorities are still searching for 12 suspects who allegedly fled abroad. To help locate them, police are seeking the issuance of Interpol Red Notices.