Korea's FIU Blocks 27 Unregistered Crypto Exchange Websites

Korea Blocks 27 Unregistered Exchange Sites

South Korea will block domestic access to the websites of 27 crypto exchanges that have been serving local users without regulatory registration. Korea's Financial Intelligence Unit announced the measure on Tuesday, saying the Korea Communications Standards Commission, the country's broadcast and media review body, held two review sessions beginning October 6 and decided to block domestic access to, or terminate the use of, the 27 currently operating sites the FIU had requested for blocking. Platforms with servers or operators inside Korea face service termination, while those based offshore face access blocking.

The blocked list spans major offshore venues: KuCoin, MEXC, Phemex, XT.com, Bitrue, CoinW, ZoomEX, Poloniex, BTCC, DigiFinex, Pionex, Blofin, BingX, BitMart and KCEX all appeared, each judged to have operated for Korean users without filing with the FIU. The decision extends a perimeter that already covered mobile applications: the FIU had earlier asked Google and Apple to block new installations and updates of the unregistered operators' apps, and the web is now included as well, closing the browser route those app-store curbs left open. Under the Act on Reporting and Using Specified Financial Transaction Information, Korea's reporting law for virtual asset businesses, an operator serving the domestic market must hold an Information Security Management System certification and file a report with the FIU. The duty reaches foreign platforms that run a Korean-language website, market to Korean residents or support won payments. Unregistered operation carries up to five years in prison or a fine of 50 million won. The FIU has referred 44 unregistered operators to law enforcement to date, and 28 exchanges are currently registered in Korea.

From App Bans to Web Blocks

The step changes how Korea responds to offshore venues that ignore its registration regime. Until now, enforcement was largely indirect: the FIU passed the names of unlicensed operators to registered exchanges, which then restricted transfers involving those platforms, and referred the operators themselves to prosecutors. App-store restrictions on new installs and updates were layered on top. Blocking the websites themselves was not part of that routine.

The FIU framed the decision as a strengthening of both the speed and the practical force of its enforcement. It can now cut off user access as soon as unregistered activity is detected, without waiting for a judicial ruling or for confirmed victim reports, which it expects to prevent harm before it occurs. Korean law treats unregistered operation as illegal in itself, which is why authorities chose to act on detection rather than wait for damage reports or court findings. Authorities also said they will keep checking for mirror sites that resume operations under new addresses after a block. For users whose funds sit on a blocked platform, the FIU and the alliance plan to publish withdrawal routes and procedures together with the operators concerned.

The economics behind the move are visible in a joint investigation conducted in June with the Digital Asset Exchange Alliance, the self-regulatory body of Korea's major won trading platforms. The survey found average trading fees of 1.5% to 10% at the operators caught trading without registration, against an average of 0.16% on Korea's five major won-denominated exchanges, a gap of as much as 62 times. The FIU also warned that unregistered operators fall outside both the reporting law and the Virtual Asset User Protection Act, leaving anti-money laundering and know-your-customer (KYC) safeguards weak, and users with little recourse when personal data leaks, hacks hit, withdrawals freeze or fraud surfaces. It urged users to confirm an operator's registration status before depositing funds.

A Preventive Shift for Offshore Venues

For platforms such as KuCoin and MEXC, the practical loss is larger than any prior step: deposits at registered venues were restricted before, but the Korean web audience itself now goes dark on detection. The 28 registered operators hold ISMS certification and file with the FIU, and users weighing compliant venues can compare options in a vetted list of the Best Crypto Exchanges. Given that detection now triggers blocking directly, expect the list of 27 to grow, and expect offshore venues serving Korean demand across spot trading and wider Web3 products to weigh registration more seriously.